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Finding the Fourth Proportional to 2,659,455, 3,989,182.50 and 664,911

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Solution

The fourth proportional to 2,659,455, 3,989,182.50 and 664,911 is: 997,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659,455 : 3,989,182.50 = 664,911 : x
  2. Step 2: Convert to fraction form
    2,659,455/3,989,182.50 = 664,911/x
  3. Step 3: Cross multiply
    2,659,455x = 3,989,182.50 × 664,911
  4. Step 4: Simplify right side
    2,659,455x = 2,652,451,325,257.50
  5. Step 5: Solve for x
    x = 2,652,451,325,257.50/2,659,455
  6. Step 6: Final answer
    x = 997,366.50

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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.