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Finding the Fourth Proportional to 25,793.10, 38,692.08 and 13,319.10

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Solution

The fourth proportional to 25,793.10, 38,692.08 and 13,319.10 is: 19,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,793.10 : 38,692.08 = 13,319.10 : x
  2. Step 2: Convert to fraction form
    25,793.10/38,692.08 = 13,319.10/x
  3. Step 3: Cross multiply
    25,793.10x = 38,692.08 × 13,319.10
  4. Step 4: Simplify right side
    25,793.10x = 515,343,682.73
  5. Step 5: Solve for x
    x = 515,343,682.73/25,793.10
  6. Step 6: Final answer
    x = 19,979.90

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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.