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Finding the Fourth Proportional to 168,761.20, 253,141.80 and 168,761.20

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Solution

The fourth proportional to 168,761.20, 253,141.80 and 168,761.20 is: 253,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,761.20 : 253,141.80 = 168,761.20 : x
  2. Step 2: Convert to fraction form
    168,761.20/253,141.80 = 168,761.20/x
  3. Step 3: Cross multiply
    168,761.20x = 253,141.80 × 168,761.20
  4. Step 4: Simplify right side
    168,761.20x = 42,720,513,938.16
  5. Step 5: Solve for x
    x = 42,720,513,938.16/168,761.20
  6. Step 6: Final answer
    x = 253,141.80

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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.