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Finding the Fourth Proportional to 693,391.27, 956,861.63 and 387,470.17

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Solution

The fourth proportional to 693,391.27, 956,861.63 and 387,470.17 is: 534,698.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,391.27 : 956,861.63 = 387,470.17 : x
  2. Step 2: Convert to fraction form
    693,391.27/956,861.63 = 387,470.17/x
  3. Step 3: Cross multiply
    693,391.27x = 956,861.63 × 387,470.17
  4. Step 4: Simplify right side
    693,391.27x = 370,755,334,113.07
  5. Step 5: Solve for x
    x = 370,755,334,113.07/693,391.27
  6. Step 6: Final answer
    x = 534,698.59

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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.