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Finding the Fourth Proportional to 110,712.20, 152,782.83 and 60,411.20

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Solution

The fourth proportional to 110,712.20, 152,782.83 and 60,411.20 is: 83,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,712.20 : 152,782.83 = 60,411.20 : x
  2. Step 2: Convert to fraction form
    110,712.20/152,782.83 = 60,411.20/x
  3. Step 3: Cross multiply
    110,712.20x = 152,782.83 × 60,411.20
  4. Step 4: Simplify right side
    110,712.20x = 9,229,793,335.78
  5. Step 5: Solve for x
    x = 9,229,793,335.78/110,712.20
  6. Step 6: Final answer
    x = 83,367.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.