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Finding the Fourth Proportional to 105,660.30, 158,631.23 and 61,318.88

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Solution

The fourth proportional to 105,660.30, 158,631.23 and 61,318.88 is: 92,060.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,660.30 : 158,631.23 = 61,318.88 : x
  2. Step 2: Convert to fraction form
    105,660.30/158,631.23 = 61,318.88/x
  3. Step 3: Cross multiply
    105,660.30x = 158,631.23 × 61,318.88
  4. Step 4: Simplify right side
    105,660.30x = 9,727,089,356.62
  5. Step 5: Solve for x
    x = 9,727,089,356.62/105,660.30
  6. Step 6: Final answer
    x = 92,060.02

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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.