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Finding the Fourth Proportional to 18,031.70, 27,047.55 and 14,959.70

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Solution

The fourth proportional to 18,031.70, 27,047.55 and 14,959.70 is: 22,439.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.70 : 27,047.55 = 14,959.70 : x
  2. Step 2: Convert to fraction form
    18,031.70/27,047.55 = 14,959.70/x
  3. Step 3: Cross multiply
    18,031.70x = 27,047.55 × 14,959.70
  4. Step 4: Simplify right side
    18,031.70x = 404,623,233.74
  5. Step 5: Solve for x
    x = 404,623,233.74/18,031.70
  6. Step 6: Final answer
    x = 22,439.55

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1.5x scale

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.