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Finding the Fourth Proportional to 108,648.30, 162,972.45 and 104,711.70

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Solution

The fourth proportional to 108,648.30, 162,972.45 and 104,711.70 is: 157,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,648.30 : 162,972.45 = 104,711.70 : x
  2. Step 2: Convert to fraction form
    108,648.30/162,972.45 = 104,711.70/x
  3. Step 3: Cross multiply
    108,648.30x = 162,972.45 × 104,711.70
  4. Step 4: Simplify right side
    108,648.30x = 17,065,122,292.67
  5. Step 5: Solve for x
    x = 17,065,122,292.67/108,648.30
  6. Step 6: Final answer
    x = 157,067.55

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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.