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Finding the Fourth Proportional to 92,610.60, 138,862.26 and 81,539.52

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Solution

The fourth proportional to 92,610.60, 138,862.26 and 81,539.52 is: 122,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,610.60 : 138,862.26 = 81,539.52 : x
  2. Step 2: Convert to fraction form
    92,610.60/138,862.26 = 81,539.52/x
  3. Step 3: Cross multiply
    92,610.60x = 138,862.26 × 81,539.52
  4. Step 4: Simplify right side
    92,610.60x = 11,322,762,026.52
  5. Step 5: Solve for x
    x = 11,322,762,026.52/92,610.60
  6. Step 6: Final answer
    x = 122,262.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.