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Finding the Fourth Proportional to 15,195.01, 20,970.17 and 8,481.95

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Solution

The fourth proportional to 15,195.01, 20,970.17 and 8,481.95 is: 11,705.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.01 : 20,970.17 = 8,481.95 : x
  2. Step 2: Convert to fraction form
    15,195.01/20,970.17 = 8,481.95/x
  3. Step 3: Cross multiply
    15,195.01x = 20,970.17 × 8,481.95
  4. Step 4: Simplify right side
    15,195.01x = 177,867,943.45
  5. Step 5: Solve for x
    x = 177,867,943.45/15,195.01
  6. Step 6: Final answer
    x = 11,705.68

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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.