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Finding the Fourth Proportional to 127,871.60, 192,026.10 and 83,694.20

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Solution

The fourth proportional to 127,871.60, 192,026.10 and 83,694.20 is: 125,684.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,871.60 : 192,026.10 = 83,694.20 : x
  2. Step 2: Convert to fraction form
    127,871.60/192,026.10 = 83,694.20/x
  3. Step 3: Cross multiply
    127,871.60x = 192,026.10 × 83,694.20
  4. Step 4: Simplify right side
    127,871.60x = 16,071,470,818.62
  5. Step 5: Solve for x
    x = 16,071,470,818.62/127,871.60
  6. Step 6: Final answer
    x = 125,684.44

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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.