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Finding the Fourth Proportional to 69,987.74, 104,981.54 and 17,397.24

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Solution

The fourth proportional to 69,987.74, 104,981.54 and 17,397.24 is: 26,095.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.74 : 104,981.54 = 17,397.24 : x
  2. Step 2: Convert to fraction form
    69,987.74/104,981.54 = 17,397.24/x
  3. Step 3: Cross multiply
    69,987.74x = 104,981.54 × 17,397.24
  4. Step 4: Simplify right side
    69,987.74x = 1,826,389,046.95
  5. Step 5: Solve for x
    x = 1,826,389,046.95/69,987.74
  6. Step 6: Final answer
    x = 26,095.84

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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.