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Finding the Fourth Proportional to 113,376.60, 169,956.90 and 42,280.20

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Solution

The fourth proportional to 113,376.60, 169,956.90 and 42,280.20 is: 63,380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,376.60 : 169,956.90 = 42,280.20 : x
  2. Step 2: Convert to fraction form
    113,376.60/169,956.90 = 42,280.20/x
  3. Step 3: Cross multiply
    113,376.60x = 169,956.90 × 42,280.20
  4. Step 4: Simplify right side
    113,376.60x = 7,185,811,723.38
  5. Step 5: Solve for x
    x = 7,185,811,723.38/113,376.60
  6. Step 6: Final answer
    x = 63,380.02

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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.