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Finding the Fourth Proportional to 663,905.20, 995,857.80 and 453,953.20

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Solution

The fourth proportional to 663,905.20, 995,857.80 and 453,953.20 is: 680,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,905.20 : 995,857.80 = 453,953.20 : x
  2. Step 2: Convert to fraction form
    663,905.20/995,857.80 = 453,953.20/x
  3. Step 3: Cross multiply
    663,905.20x = 995,857.80 × 453,953.20
  4. Step 4: Simplify right side
    663,905.20x = 452,072,835,054.96
  5. Step 5: Solve for x
    x = 452,072,835,054.96/663,905.20
  6. Step 6: Final answer
    x = 680,929.80

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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.