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Finding the Fourth Proportional to 103,386.88, 155,138.88 and 44,217.28

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Solution

The fourth proportional to 103,386.88, 155,138.88 and 44,217.28 is: 66,350.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,386.88 : 155,138.88 = 44,217.28 : x
  2. Step 2: Convert to fraction form
    103,386.88/155,138.88 = 44,217.28/x
  3. Step 3: Cross multiply
    103,386.88x = 155,138.88 × 44,217.28
  4. Step 4: Simplify right side
    103,386.88x = 6,859,819,295.85
  5. Step 5: Solve for x
    x = 6,859,819,295.85/103,386.88
  6. Step 6: Final answer
    x = 66,350.97

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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.