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Finding the Fourth Proportional to 29,175.20, 43,762.80 and 25,719.20

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Solution

The fourth proportional to 29,175.20, 43,762.80 and 25,719.20 is: 38,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,175.20 : 43,762.80 = 25,719.20 : x
  2. Step 2: Convert to fraction form
    29,175.20/43,762.80 = 25,719.20/x
  3. Step 3: Cross multiply
    29,175.20x = 43,762.80 × 25,719.20
  4. Step 4: Simplify right side
    29,175.20x = 1,125,544,205.76
  5. Step 5: Solve for x
    x = 1,125,544,205.76/29,175.20
  6. Step 6: Final answer
    x = 38,578.80

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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.