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Finding the Fourth Proportional to 18,830.75, 25,972.02 and 13,793.13

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Solution

The fourth proportional to 18,830.75, 25,972.02 and 13,793.13 is: 19,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.75 : 25,972.02 = 13,793.13 : x
  2. Step 2: Convert to fraction form
    18,830.75/25,972.02 = 13,793.13/x
  3. Step 3: Cross multiply
    18,830.75x = 25,972.02 × 13,793.13
  4. Step 4: Simplify right side
    18,830.75x = 358,235,448.22
  5. Step 5: Solve for x
    x = 358,235,448.22/18,830.75
  6. Step 6: Final answer
    x = 19,023.97

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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.