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Finding the Fourth Proportional to 127,168.38, 175,456.80 and 79,470.18

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Solution

The fourth proportional to 127,168.38, 175,456.80 and 79,470.18 is: 109,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,168.38 : 175,456.80 = 79,470.18 : x
  2. Step 2: Convert to fraction form
    127,168.38/175,456.80 = 79,470.18/x
  3. Step 3: Cross multiply
    127,168.38x = 175,456.80 × 79,470.18
  4. Step 4: Simplify right side
    127,168.38x = 13,943,583,478.22
  5. Step 5: Solve for x
    x = 13,943,583,478.22/127,168.38
  6. Step 6: Final answer
    x = 109,646.62

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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.