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Finding the Fourth Proportional to 18,472.68, 25,513.52 and 13,459.32

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Solution

The fourth proportional to 18,472.68, 25,513.52 and 13,459.32 is: 18,589.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.68 : 25,513.52 = 13,459.32 : x
  2. Step 2: Convert to fraction form
    18,472.68/25,513.52 = 13,459.32/x
  3. Step 3: Cross multiply
    18,472.68x = 25,513.52 × 13,459.32
  4. Step 4: Simplify right side
    18,472.68x = 343,394,562.71
  5. Step 5: Solve for x
    x = 343,394,562.71/18,472.68
  6. Step 6: Final answer
    x = 18,589.32

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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.