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Finding the Fourth Proportional to 663,844,985.70, 995,767,478.55 and 663,844,985.70

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Solution

The fourth proportional to 663,844,985.70, 995,767,478.55 and 663,844,985.70 is: 995,767,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,844,985.70 : 995,767,478.55 = 663,844,985.70 : x
  2. Step 2: Convert to fraction form
    663,844,985.70/995,767,478.55 = 663,844,985.70/x
  3. Step 3: Cross multiply
    663,844,985.70x = 995,767,478.55 × 663,844,985.70
  4. Step 4: Simplify right side
    663,844,985.70x = 661,035,247,558,549,760
  5. Step 5: Solve for x
    x = 661,035,247,558,549,760/663,844,985.70
  6. Step 6: Final answer
    x = 995,767,478.55

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.