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Finding the Fourth Proportional to 18,339.59, 25,308.59 and 10,382.56

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Solution

The fourth proportional to 18,339.59, 25,308.59 and 10,382.56 is: 14,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.59 : 25,308.59 = 10,382.56 : x
  2. Step 2: Convert to fraction form
    18,339.59/25,308.59 = 10,382.56/x
  3. Step 3: Cross multiply
    18,339.59x = 25,308.59 × 10,382.56
  4. Step 4: Simplify right side
    18,339.59x = 262,767,839.01
  5. Step 5: Solve for x
    x = 262,767,839.01/18,339.59
  6. Step 6: Final answer
    x = 14,327.90

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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.