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Finding the Fourth Proportional to 135,453.32, 186,926.16 and 75,022.64

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Solution

The fourth proportional to 135,453.32, 186,926.16 and 75,022.64 is: 103,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,453.32 : 186,926.16 = 75,022.64 : x
  2. Step 2: Convert to fraction form
    135,453.32/186,926.16 = 75,022.64/x
  3. Step 3: Cross multiply
    135,453.32x = 186,926.16 × 75,022.64
  4. Step 4: Simplify right side
    135,453.32x = 14,023,694,008.26
  5. Step 5: Solve for x
    x = 14,023,694,008.26/135,453.32
  6. Step 6: Final answer
    x = 103,531.56

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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.