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Finding the Fourth Proportional to 18,422.74, 25,423.34 and 10,039.24

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Solution

The fourth proportional to 18,422.74, 25,423.34 and 10,039.24 is: 13,854.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.74 : 25,423.34 = 10,039.24 : x
  2. Step 2: Convert to fraction form
    18,422.74/25,423.34 = 10,039.24/x
  3. Step 3: Cross multiply
    18,422.74x = 25,423.34 × 10,039.24
  4. Step 4: Simplify right side
    18,422.74x = 255,231,011.86
  5. Step 5: Solve for x
    x = 255,231,011.86/18,422.74
  6. Step 6: Final answer
    x = 13,854.13

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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.