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Finding the Fourth Proportional to 18,424.22, 25,424.19 and 10,359.11

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Solution

The fourth proportional to 18,424.22, 25,424.19 and 10,359.11 is: 14,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.22 : 25,424.19 = 10,359.11 : x
  2. Step 2: Convert to fraction form
    18,424.22/25,424.19 = 10,359.11/x
  3. Step 3: Cross multiply
    18,424.22x = 25,424.19 × 10,359.11
  4. Step 4: Simplify right side
    18,424.22x = 263,371,853.75
  5. Step 5: Solve for x
    x = 263,371,853.75/18,424.22
  6. Step 6: Final answer
    x = 14,294.88

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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.