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Finding the Fourth Proportional to 86,304.69, 129,396.87 and 38,247.14

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Solution

The fourth proportional to 86,304.69, 129,396.87 and 38,247.14 is: 57,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,304.69 : 129,396.87 = 38,247.14 : x
  2. Step 2: Convert to fraction form
    86,304.69/129,396.87 = 38,247.14/x
  3. Step 3: Cross multiply
    86,304.69x = 129,396.87 × 38,247.14
  4. Step 4: Simplify right side
    86,304.69x = 4,949,059,555.47
  5. Step 5: Solve for x
    x = 4,949,059,555.47/86,304.69
  6. Step 6: Final answer
    x = 57,344.04

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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.