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Finding the Fourth Proportional to 18,462.75, 25,478.73 and 10,079.25

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Solution

The fourth proportional to 18,462.75, 25,478.73 and 10,079.25 is: 13,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.75 : 25,478.73 = 10,079.25 : x
  2. Step 2: Convert to fraction form
    18,462.75/25,478.73 = 10,079.25/x
  3. Step 3: Cross multiply
    18,462.75x = 25,478.73 × 10,079.25
  4. Step 4: Simplify right side
    18,462.75x = 256,806,489.35
  5. Step 5: Solve for x
    x = 256,806,489.35/18,462.75
  6. Step 6: Final answer
    x = 13,909.44

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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.