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Finding the Fourth Proportional to 127,685.97, 176,126.81 and 91,819.17

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Solution

The fourth proportional to 127,685.97, 176,126.81 and 91,819.17 is: 126,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,685.97 : 176,126.81 = 91,819.17 : x
  2. Step 2: Convert to fraction form
    127,685.97/176,126.81 = 91,819.17/x
  3. Step 3: Cross multiply
    127,685.97x = 176,126.81 × 91,819.17
  4. Step 4: Simplify right side
    127,685.97x = 16,171,817,049.85
  5. Step 5: Solve for x
    x = 16,171,817,049.85/127,685.97
  6. Step 6: Final answer
    x = 126,653.05

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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.