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Finding the Fourth Proportional to 162,379.20, 243,223.20 and 134,731.20

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Solution

The fourth proportional to 162,379.20, 243,223.20 and 134,731.20 is: 201,810.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,379.20 : 243,223.20 = 134,731.20 : x
  2. Step 2: Convert to fraction form
    162,379.20/243,223.20 = 134,731.20/x
  3. Step 3: Cross multiply
    162,379.20x = 243,223.20 × 134,731.20
  4. Step 4: Simplify right side
    162,379.20x = 32,769,753,603.84
  5. Step 5: Solve for x
    x = 32,769,753,603.84/162,379.20
  6. Step 6: Final answer
    x = 201,810.04

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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.