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Finding the Fourth Proportional to 621,545.69, 932,318.55 and 411,134.42

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Solution

The fourth proportional to 621,545.69, 932,318.55 and 411,134.42 is: 616,701.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,545.69 : 932,318.55 = 411,134.42 : x
  2. Step 2: Convert to fraction form
    621,545.69/932,318.55 = 411,134.42/x
  3. Step 3: Cross multiply
    621,545.69x = 932,318.55 × 411,134.42
  4. Step 4: Simplify right side
    621,545.69x = 383,308,240,106.14
  5. Step 5: Solve for x
    x = 383,308,240,106.14/621,545.69
  6. Step 6: Final answer
    x = 616,701.63

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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.