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Finding the Fourth Proportional to 15,910.60, 23,865.90 and 15,521.80

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Solution

The fourth proportional to 15,910.60, 23,865.90 and 15,521.80 is: 23,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.60 : 23,865.90 = 15,521.80 : x
  2. Step 2: Convert to fraction form
    15,910.60/23,865.90 = 15,521.80/x
  3. Step 3: Cross multiply
    15,910.60x = 23,865.90 × 15,521.80
  4. Step 4: Simplify right side
    15,910.60x = 370,441,726.62
  5. Step 5: Solve for x
    x = 370,441,726.62/15,910.60
  6. Step 6: Final answer
    x = 23,282.70

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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.