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Finding the Fourth Proportional to 86,240.97, 129,377.90 and 30,097.12

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Solution

The fourth proportional to 86,240.97, 129,377.90 and 30,097.12 is: 45,151.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,240.97 : 129,377.90 = 30,097.12 : x
  2. Step 2: Convert to fraction form
    86,240.97/129,377.90 = 30,097.12/x
  3. Step 3: Cross multiply
    86,240.97x = 129,377.90 × 30,097.12
  4. Step 4: Simplify right side
    86,240.97x = 3,893,901,534.76
  5. Step 5: Solve for x
    x = 3,893,901,534.76/86,240.97
  6. Step 6: Final answer
    x = 45,151.41

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1.5x scale

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.