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Finding the Fourth Proportional to 69,120.74, 103,600.19 and 26,398.17

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Solution

The fourth proportional to 69,120.74, 103,600.19 and 26,398.17 is: 39,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,120.74 : 103,600.19 = 26,398.17 : x
  2. Step 2: Convert to fraction form
    69,120.74/103,600.19 = 26,398.17/x
  3. Step 3: Cross multiply
    69,120.74x = 103,600.19 × 26,398.17
  4. Step 4: Simplify right side
    69,120.74x = 2,734,855,295.66
  5. Step 5: Solve for x
    x = 2,734,855,295.66/69,120.74
  6. Step 6: Final answer
    x = 39,566.35

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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.