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Finding the Fourth Proportional to 17,732.88, 26,602.20 and 5,418

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Solution

The fourth proportional to 17,732.88, 26,602.20 and 5,418 is: 8,127.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,732.88 : 26,602.20 = 5,418 : x
  2. Step 2: Convert to fraction form
    17,732.88/26,602.20 = 5,418/x
  3. Step 3: Cross multiply
    17,732.88x = 26,602.20 × 5,418
  4. Step 4: Simplify right side
    17,732.88x = 144,130,719.60
  5. Step 5: Solve for x
    x = 144,130,719.60/17,732.88
  6. Step 6: Final answer
    x = 8,127.88

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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.