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Finding the Fourth Proportional to 162,572.81, 243,691.61 and 67,858.11

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Solution

The fourth proportional to 162,572.81, 243,691.61 and 67,858.11 is: 101,717.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,572.81 : 243,691.61 = 67,858.11 : x
  2. Step 2: Convert to fraction form
    162,572.81/243,691.61 = 67,858.11/x
  3. Step 3: Cross multiply
    162,572.81x = 243,691.61 × 67,858.11
  4. Step 4: Simplify right side
    162,572.81x = 16,536,452,423.55
  5. Step 5: Solve for x
    x = 16,536,452,423.55/162,572.81
  6. Step 6: Final answer
    x = 101,717.21

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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.