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Finding the Fourth Proportional to 75,422.87, 113,148.88 and 28,672.10

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Solution

The fourth proportional to 75,422.87, 113,148.88 and 28,672.10 is: 43,013.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,422.87 : 113,148.88 = 28,672.10 : x
  2. Step 2: Convert to fraction form
    75,422.87/113,148.88 = 28,672.10/x
  3. Step 3: Cross multiply
    75,422.87x = 113,148.88 × 28,672.10
  4. Step 4: Simplify right side
    75,422.87x = 3,244,215,364.82
  5. Step 5: Solve for x
    x = 3,244,215,364.82/75,422.87
  6. Step 6: Final answer
    x = 43,013.69

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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.