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Finding the Fourth Proportional to 25,348.80, 34,978.82 and 14,739.14

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Solution

The fourth proportional to 25,348.80, 34,978.82 and 14,739.14 is: 20,338.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,348.80 : 34,978.82 = 14,739.14 : x
  2. Step 2: Convert to fraction form
    25,348.80/34,978.82 = 14,739.14/x
  3. Step 3: Cross multiply
    25,348.80x = 34,978.82 × 14,739.14
  4. Step 4: Simplify right side
    25,348.80x = 515,557,725.01
  5. Step 5: Solve for x
    x = 515,557,725.01/25,348.80
  6. Step 6: Final answer
    x = 20,338.55

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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.