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Finding the Fourth Proportional to 29,115.78, 40,139.07 and 24,621.48

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Solution

The fourth proportional to 29,115.78, 40,139.07 and 24,621.48 is: 33,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,115.78 : 40,139.07 = 24,621.48 : x
  2. Step 2: Convert to fraction form
    29,115.78/40,139.07 = 24,621.48/x
  3. Step 3: Cross multiply
    29,115.78x = 40,139.07 × 24,621.48
  4. Step 4: Simplify right side
    29,115.78x = 988,283,309.22
  5. Step 5: Solve for x
    x = 988,283,309.22/29,115.78
  6. Step 6: Final answer
    x = 33,943.22

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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.