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Finding the Fourth Proportional to 127,819.56, 176,387.46 and 71,229.48

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Solution

The fourth proportional to 127,819.56, 176,387.46 and 71,229.48 is: 98,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,819.56 : 176,387.46 = 71,229.48 : x
  2. Step 2: Convert to fraction form
    127,819.56/176,387.46 = 71,229.48/x
  3. Step 3: Cross multiply
    127,819.56x = 176,387.46 × 71,229.48
  4. Step 4: Simplify right side
    127,819.56x = 12,563,987,054.32
  5. Step 5: Solve for x
    x = 12,563,987,054.32/127,819.56
  6. Step 6: Final answer
    x = 98,294.71

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1.5x scale

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.