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Finding the Fourth Proportional to 543,136.30, 813,829.65 and 453,906.70

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Solution

The fourth proportional to 543,136.30, 813,829.65 and 453,906.70 is: 680,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,136.30 : 813,829.65 = 453,906.70 : x
  2. Step 2: Convert to fraction form
    543,136.30/813,829.65 = 453,906.70/x
  3. Step 3: Cross multiply
    543,136.30x = 813,829.65 × 453,906.70
  4. Step 4: Simplify right side
    543,136.30x = 369,402,730,793.66
  5. Step 5: Solve for x
    x = 369,402,730,793.66/543,136.30
  6. Step 6: Final answer
    x = 680,128.97

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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.