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Finding the Fourth Proportional to 67,428.16, 101,080.32 and 25,866.88

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Solution

The fourth proportional to 67,428.16, 101,080.32 and 25,866.88 is: 38,776.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,428.16 : 101,080.32 = 25,866.88 : x
  2. Step 2: Convert to fraction form
    67,428.16/101,080.32 = 25,866.88/x
  3. Step 3: Cross multiply
    67,428.16x = 101,080.32 × 25,866.88
  4. Step 4: Simplify right side
    67,428.16x = 2,614,632,507.80
  5. Step 5: Solve for x
    x = 2,614,632,507.80/67,428.16
  6. Step 6: Final answer
    x = 38,776.57

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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.