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Finding the Fourth Proportional to 522,061.40, 783,092.10 and 457,779.80

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Solution

The fourth proportional to 522,061.40, 783,092.10 and 457,779.80 is: 686,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,061.40 : 783,092.10 = 457,779.80 : x
  2. Step 2: Convert to fraction form
    522,061.40/783,092.10 = 457,779.80/x
  3. Step 3: Cross multiply
    522,061.40x = 783,092.10 × 457,779.80
  4. Step 4: Simplify right side
    522,061.40x = 358,483,744,919.58
  5. Step 5: Solve for x
    x = 358,483,744,919.58/522,061.40
  6. Step 6: Final answer
    x = 686,669.70

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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.