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Finding the Fourth Proportional to 18,422.52, 25,423.11 and 10,039.02

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Solution

The fourth proportional to 18,422.52, 25,423.11 and 10,039.02 is: 13,853.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.52 : 25,423.11 = 10,039.02 : x
  2. Step 2: Convert to fraction form
    18,422.52/25,423.11 = 10,039.02/x
  3. Step 3: Cross multiply
    18,422.52x = 25,423.11 × 10,039.02
  4. Step 4: Simplify right side
    18,422.52x = 255,223,109.75
  5. Step 5: Solve for x
    x = 255,223,109.75/18,422.52
  6. Step 6: Final answer
    x = 13,853.87

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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.