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Finding the Fourth Proportional to 13,862.62, 20,793.93 and 11,959.93

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Solution

The fourth proportional to 13,862.62, 20,793.93 and 11,959.93 is: 17,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.62 : 20,793.93 = 11,959.93 : x
  2. Step 2: Convert to fraction form
    13,862.62/20,793.93 = 11,959.93/x
  3. Step 3: Cross multiply
    13,862.62x = 20,793.93 × 11,959.93
  4. Step 4: Simplify right side
    13,862.62x = 248,693,947.22
  5. Step 5: Solve for x
    x = 248,693,947.22/13,862.62
  6. Step 6: Final answer
    x = 17,939.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.