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Finding the Fourth Proportional to 623,715.10, 935,572.65 and 576,475.90

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Solution

The fourth proportional to 623,715.10, 935,572.65 and 576,475.90 is: 864,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,715.10 : 935,572.65 = 576,475.90 : x
  2. Step 2: Convert to fraction form
    623,715.10/935,572.65 = 576,475.90/x
  3. Step 3: Cross multiply
    623,715.10x = 935,572.65 × 576,475.90
  4. Step 4: Simplify right side
    623,715.10x = 539,335,085,424.14
  5. Step 5: Solve for x
    x = 539,335,085,424.14/623,715.10
  6. Step 6: Final answer
    x = 864,713.85

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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.