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Finding the Fourth Proportional to 61,651.76, 85,079.40 and 34,799.90

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Solution

The fourth proportional to 61,651.76, 85,079.40 and 34,799.90 is: 48,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,651.76 : 85,079.40 = 34,799.90 : x
  2. Step 2: Convert to fraction form
    61,651.76/85,079.40 = 34,799.90/x
  3. Step 3: Cross multiply
    61,651.76x = 85,079.40 × 34,799.90
  4. Step 4: Simplify right side
    61,651.76x = 2,960,754,612.06
  5. Step 5: Solve for x
    x = 2,960,754,612.06/61,651.76
  6. Step 6: Final answer
    x = 48,023.85

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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.