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Finding the Fourth Proportional to 161,729.20, 242,248.20 and 134,081.20

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Solution

The fourth proportional to 161,729.20, 242,248.20 and 134,081.20 is: 200,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,729.20 : 242,248.20 = 134,081.20 : x
  2. Step 2: Convert to fraction form
    161,729.20/242,248.20 = 134,081.20/x
  3. Step 3: Cross multiply
    161,729.20x = 242,248.20 × 134,081.20
  4. Step 4: Simplify right side
    161,729.20x = 32,480,929,353.84
  5. Step 5: Solve for x
    x = 32,480,929,353.84/161,729.20
  6. Step 6: Final answer
    x = 200,835.28

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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.