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Finding the Fourth Proportional to 18,357.68, 25,363.32 and 12,793.52

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Solution

The fourth proportional to 18,357.68, 25,363.32 and 12,793.52 is: 17,675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.68 : 25,363.32 = 12,793.52 : x
  2. Step 2: Convert to fraction form
    18,357.68/25,363.32 = 12,793.52/x
  3. Step 3: Cross multiply
    18,357.68x = 25,363.32 × 12,793.52
  4. Step 4: Simplify right side
    18,357.68x = 324,486,141.69
  5. Step 5: Solve for x
    x = 324,486,141.69/18,357.68
  6. Step 6: Final answer
    x = 17,675.77

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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.