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Finding the Fourth Proportional to 27,891.52, 38,491.20 and 15,954.88

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Solution

The fourth proportional to 27,891.52, 38,491.20 and 15,954.88 is: 22,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,891.52 : 38,491.20 = 15,954.88 : x
  2. Step 2: Convert to fraction form
    27,891.52/38,491.20 = 15,954.88/x
  3. Step 3: Cross multiply
    27,891.52x = 38,491.20 × 15,954.88
  4. Step 4: Simplify right side
    27,891.52x = 614,122,477.06
  5. Step 5: Solve for x
    x = 614,122,477.06/27,891.52
  6. Step 6: Final answer
    x = 22,018.25

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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.