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Finding the Fourth Proportional to 61,540.64, 84,926.04 and 34,689.68

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Solution

The fourth proportional to 61,540.64, 84,926.04 and 34,689.68 is: 47,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,540.64 : 84,926.04 = 34,689.68 : x
  2. Step 2: Convert to fraction form
    61,540.64/84,926.04 = 34,689.68/x
  3. Step 3: Cross multiply
    61,540.64x = 84,926.04 × 34,689.68
  4. Step 4: Simplify right side
    61,540.64x = 2,946,057,151.27
  5. Step 5: Solve for x
    x = 2,946,057,151.27/61,540.64
  6. Step 6: Final answer
    x = 47,871.73

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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.