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Finding the Fourth Proportional to 135,892.81, 187,620.87 and 88,281.82

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Solution

The fourth proportional to 135,892.81, 187,620.87 and 88,281.82 is: 121,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,892.81 : 187,620.87 = 88,281.82 : x
  2. Step 2: Convert to fraction form
    135,892.81/187,620.87 = 88,281.82/x
  3. Step 3: Cross multiply
    135,892.81x = 187,620.87 × 88,281.82
  4. Step 4: Simplify right side
    135,892.81x = 16,563,511,873.58
  5. Step 5: Solve for x
    x = 16,563,511,873.58/135,892.81
  6. Step 6: Final answer
    x = 121,886.59

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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.