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Finding the Fourth Proportional to 52,672.24, 72,687.72 and 28,799.11

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Solution

The fourth proportional to 52,672.24, 72,687.72 and 28,799.11 is: 39,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,672.24 : 72,687.72 = 28,799.11 : x
  2. Step 2: Convert to fraction form
    52,672.24/72,687.72 = 28,799.11/x
  3. Step 3: Cross multiply
    52,672.24x = 72,687.72 × 28,799.11
  4. Step 4: Simplify right side
    52,672.24x = 2,093,341,643.93
  5. Step 5: Solve for x
    x = 2,093,341,643.93/52,672.24
  6. Step 6: Final answer
    x = 39,742.79

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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.