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Finding the Fourth Proportional to 18,396.75, 25,387.53 and 10,013.25

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Solution

The fourth proportional to 18,396.75, 25,387.53 and 10,013.25 is: 13,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.75 : 25,387.53 = 10,013.25 : x
  2. Step 2: Convert to fraction form
    18,396.75/25,387.53 = 10,013.25/x
  3. Step 3: Cross multiply
    18,396.75x = 25,387.53 × 10,013.25
  4. Step 4: Simplify right side
    18,396.75x = 254,211,684.77
  5. Step 5: Solve for x
    x = 254,211,684.77/18,396.75
  6. Step 6: Final answer
    x = 13,818.29

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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.