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Finding the Fourth Proportional to 105,753.85, 158,319.12 and 92,631.85

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Solution

The fourth proportional to 105,753.85, 158,319.12 and 92,631.85 is: 138,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,753.85 : 158,319.12 = 92,631.85 : x
  2. Step 2: Convert to fraction form
    105,753.85/158,319.12 = 92,631.85/x
  3. Step 3: Cross multiply
    105,753.85x = 158,319.12 × 92,631.85
  4. Step 4: Simplify right side
    105,753.85x = 14,665,392,184.38
  5. Step 5: Solve for x
    x = 14,665,392,184.38/105,753.85
  6. Step 6: Final answer
    x = 138,674.79

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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.