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Finding the Fourth Proportional to 127,555.20, 191,114.10 and 83,159.10

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Solution

The fourth proportional to 127,555.20, 191,114.10 and 83,159.10 is: 124,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,555.20 : 191,114.10 = 83,159.10 : x
  2. Step 2: Convert to fraction form
    127,555.20/191,114.10 = 83,159.10/x
  3. Step 3: Cross multiply
    127,555.20x = 191,114.10 × 83,159.10
  4. Step 4: Simplify right side
    127,555.20x = 15,892,876,553.31
  5. Step 5: Solve for x
    x = 15,892,876,553.31/127,555.20
  6. Step 6: Final answer
    x = 124,596.07

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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.