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Finding the Fourth Proportional to 113,353.20, 169,835.40 and 54,061.20

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Solution

The fourth proportional to 113,353.20, 169,835.40 and 54,061.20 is: 80,999.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,353.20 : 169,835.40 = 54,061.20 : x
  2. Step 2: Convert to fraction form
    113,353.20/169,835.40 = 54,061.20/x
  3. Step 3: Cross multiply
    113,353.20x = 169,835.40 × 54,061.20
  4. Step 4: Simplify right side
    113,353.20x = 9,181,505,526.48
  5. Step 5: Solve for x
    x = 9,181,505,526.48/113,353.20
  6. Step 6: Final answer
    x = 80,999.09

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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.