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Finding the Fourth Proportional to 70,616.97, 97,451.33 and 38,787.91

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Solution

The fourth proportional to 70,616.97, 97,451.33 and 38,787.91 is: 53,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,616.97 : 97,451.33 = 38,787.91 : x
  2. Step 2: Convert to fraction form
    70,616.97/97,451.33 = 38,787.91/x
  3. Step 3: Cross multiply
    70,616.97x = 97,451.33 × 38,787.91
  4. Step 4: Simplify right side
    70,616.97x = 3,779,932,979.85
  5. Step 5: Solve for x
    x = 3,779,932,979.85/70,616.97
  6. Step 6: Final answer
    x = 53,527.26

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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.