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Finding the Fourth Proportional to 26,672.80, 36,801.12 and 15,494.80

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Solution

The fourth proportional to 26,672.80, 36,801.12 and 15,494.80 is: 21,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,672.80 : 36,801.12 = 15,494.80 : x
  2. Step 2: Convert to fraction form
    26,672.80/36,801.12 = 15,494.80/x
  3. Step 3: Cross multiply
    26,672.80x = 36,801.12 × 15,494.80
  4. Step 4: Simplify right side
    26,672.80x = 570,225,994.18
  5. Step 5: Solve for x
    x = 570,225,994.18/26,672.80
  6. Step 6: Final answer
    x = 21,378.56

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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.