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Finding the Fourth Proportional to 61,679.17, 85,121.13 and 34,811.92

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Solution

The fourth proportional to 61,679.17, 85,121.13 and 34,811.92 is: 48,042.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,679.17 : 85,121.13 = 34,811.92 : x
  2. Step 2: Convert to fraction form
    61,679.17/85,121.13 = 34,811.92/x
  3. Step 3: Cross multiply
    61,679.17x = 85,121.13 × 34,811.92
  4. Step 4: Simplify right side
    61,679.17x = 2,963,229,967.87
  5. Step 5: Solve for x
    x = 2,963,229,967.87/61,679.17
  6. Step 6: Final answer
    x = 48,042.64

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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.