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Finding the Fourth Proportional to 71,904.71, 99,254.54 and 43,609.79

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Solution

The fourth proportional to 71,904.71, 99,254.54 and 43,609.79 is: 60,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,904.71 : 99,254.54 = 43,609.79 : x
  2. Step 2: Convert to fraction form
    71,904.71/99,254.54 = 43,609.79/x
  3. Step 3: Cross multiply
    71,904.71x = 99,254.54 × 43,609.79
  4. Step 4: Simplify right side
    71,904.71x = 4,328,469,258.70
  5. Step 5: Solve for x
    x = 4,328,469,258.70/71,904.71
  6. Step 6: Final answer
    x = 60,197.30

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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.