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Finding the Fourth Proportional to 99,985.97, 150,034.31 and 59,906.46

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Solution

The fourth proportional to 99,985.97, 150,034.31 and 59,906.46 is: 89,892.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.97 : 150,034.31 = 59,906.46 : x
  2. Step 2: Convert to fraction form
    99,985.97/150,034.31 = 59,906.46/x
  3. Step 3: Cross multiply
    99,985.97x = 150,034.31 × 59,906.46
  4. Step 4: Simplify right side
    99,985.97x = 8,988,024,390.64
  5. Step 5: Solve for x
    x = 8,988,024,390.64/99,985.97
  6. Step 6: Final answer
    x = 89,892.86

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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.