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Finding the Fourth Proportional to 109,992.78, 151,790.04 and 59,691.78

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Solution

The fourth proportional to 109,992.78, 151,790.04 and 59,691.78 is: 82,374.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,992.78 : 151,790.04 = 59,691.78 : x
  2. Step 2: Convert to fraction form
    109,992.78/151,790.04 = 59,691.78/x
  3. Step 3: Cross multiply
    109,992.78x = 151,790.04 × 59,691.78
  4. Step 4: Simplify right side
    109,992.78x = 9,060,617,450.03
  5. Step 5: Solve for x
    x = 9,060,617,450.03/109,992.78
  6. Step 6: Final answer
    x = 82,374.66

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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.