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Finding the Fourth Proportional to 693,463.91, 956,983.73 and 387,545.40

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Solution

The fourth proportional to 693,463.91, 956,983.73 and 387,545.40 is: 534,814.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,463.91 : 956,983.73 = 387,545.40 : x
  2. Step 2: Convert to fraction form
    693,463.91/956,983.73 = 387,545.40/x
  3. Step 3: Cross multiply
    693,463.91x = 956,983.73 × 387,545.40
  4. Step 4: Simplify right side
    693,463.91x = 370,874,635,713.70
  5. Step 5: Solve for x
    x = 370,874,635,713.70/693,463.91
  6. Step 6: Final answer
    x = 534,814.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.