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Finding the Fourth Proportional to 70,062.62, 96,685.89 and 39,847.91

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Solution

The fourth proportional to 70,062.62, 96,685.89 and 39,847.91 is: 54,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,062.62 : 96,685.89 = 39,847.91 : x
  2. Step 2: Convert to fraction form
    70,062.62/96,685.89 = 39,847.91/x
  3. Step 3: Cross multiply
    70,062.62x = 96,685.89 × 39,847.91
  4. Step 4: Simplify right side
    70,062.62x = 3,852,730,159.56
  5. Step 5: Solve for x
    x = 3,852,730,159.56/70,062.62
  6. Step 6: Final answer
    x = 54,989.81

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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.