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Finding the Fourth Proportional to 29,388.78, 40,555.94 and 16,641

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Solution

The fourth proportional to 29,388.78, 40,555.94 and 16,641 is: 22,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,388.78 : 40,555.94 = 16,641 : x
  2. Step 2: Convert to fraction form
    29,388.78/40,555.94 = 16,641/x
  3. Step 3: Cross multiply
    29,388.78x = 40,555.94 × 16,641
  4. Step 4: Simplify right side
    29,388.78x = 674,891,397.54
  5. Step 5: Solve for x
    x = 674,891,397.54/29,388.78
  6. Step 6: Final answer
    x = 22,964.25

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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.