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Finding the Fourth Proportional to 18,422.62, 25,423.21 and 10,039.12

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Solution

The fourth proportional to 18,422.62, 25,423.21 and 10,039.12 is: 13,853.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.62 : 25,423.21 = 10,039.12 : x
  2. Step 2: Convert to fraction form
    18,422.62/25,423.21 = 10,039.12/x
  3. Step 3: Cross multiply
    18,422.62x = 25,423.21 × 10,039.12
  4. Step 4: Simplify right side
    18,422.62x = 255,226,567.32
  5. Step 5: Solve for x
    x = 255,226,567.32/18,422.62
  6. Step 6: Final answer
    x = 13,853.98

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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.