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Finding the Fourth Proportional to 75,272.61, 112,873.16 and 43,692.42

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Solution

The fourth proportional to 75,272.61, 112,873.16 and 43,692.42 is: 65,517.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,272.61 : 112,873.16 = 43,692.42 : x
  2. Step 2: Convert to fraction form
    75,272.61/112,873.16 = 43,692.42/x
  3. Step 3: Cross multiply
    75,272.61x = 112,873.16 × 43,692.42
  4. Step 4: Simplify right side
    75,272.61x = 4,931,701,156.31
  5. Step 5: Solve for x
    x = 4,931,701,156.31/75,272.61
  6. Step 6: Final answer
    x = 65,517.87

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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.