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Finding the Fourth Proportional to 70,863.60, 97,791.76 and 39,032.50

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Solution

The fourth proportional to 70,863.60, 97,791.76 and 39,032.50 is: 53,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,863.60 : 97,791.76 = 39,032.50 : x
  2. Step 2: Convert to fraction form
    70,863.60/97,791.76 = 39,032.50/x
  3. Step 3: Cross multiply
    70,863.60x = 97,791.76 × 39,032.50
  4. Step 4: Simplify right side
    70,863.60x = 3,817,056,872.20
  5. Step 5: Solve for x
    x = 3,817,056,872.20/70,863.60
  6. Step 6: Final answer
    x = 53,864.85

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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.