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Finding the Fourth Proportional to 127,663.68, 176,169.12 and 71,064.96

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Solution

The fourth proportional to 127,663.68, 176,169.12 and 71,064.96 is: 98,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,663.68 : 176,169.12 = 71,064.96 : x
  2. Step 2: Convert to fraction form
    127,663.68/176,169.12 = 71,064.96/x
  3. Step 3: Cross multiply
    127,663.68x = 176,169.12 × 71,064.96
  4. Step 4: Simplify right side
    127,663.68x = 12,519,451,466.04
  5. Step 5: Solve for x
    x = 12,519,451,466.04/127,663.68
  6. Step 6: Final answer
    x = 98,065.88

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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.