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Finding the Fourth Proportional to 29,661.29, 40,932.14 and 18,174.48

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Solution

The fourth proportional to 29,661.29, 40,932.14 and 18,174.48 is: 25,080.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,661.29 : 40,932.14 = 18,174.48 : x
  2. Step 2: Convert to fraction form
    29,661.29/40,932.14 = 18,174.48/x
  3. Step 3: Cross multiply
    29,661.29x = 40,932.14 × 18,174.48
  4. Step 4: Simplify right side
    29,661.29x = 743,920,115.42
  5. Step 5: Solve for x
    x = 743,920,115.42/29,661.29
  6. Step 6: Final answer
    x = 25,080.51

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1.5x scale

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.