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Finding the Fourth Proportional to 25,868.80, 38,716.80 and 22,758.40

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Solution

The fourth proportional to 25,868.80, 38,716.80 and 22,758.40 is: 34,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.80 : 38,716.80 = 22,758.40 : x
  2. Step 2: Convert to fraction form
    25,868.80/38,716.80 = 22,758.40/x
  3. Step 3: Cross multiply
    25,868.80x = 38,716.80 × 22,758.40
  4. Step 4: Simplify right side
    25,868.80x = 881,132,421.12
  5. Step 5: Solve for x
    x = 881,132,421.12/25,868.80
  6. Step 6: Final answer
    x = 34,061.59

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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.