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Finding the Fourth Proportional to 57,881.43, 79,831.31 and 38,755.13

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Solution

The fourth proportional to 57,881.43, 79,831.31 and 38,755.13 is: 53,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,881.43 : 79,831.31 = 38,755.13 : x
  2. Step 2: Convert to fraction form
    57,881.43/79,831.31 = 38,755.13/x
  3. Step 3: Cross multiply
    57,881.43x = 79,831.31 × 38,755.13
  4. Step 4: Simplify right side
    57,881.43x = 3,093,872,204.19
  5. Step 5: Solve for x
    x = 3,093,872,204.19/57,881.43
  6. Step 6: Final answer
    x = 53,451.90

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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.