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Finding the Fourth Proportional to 15,074.76, 20,798.19 and 9,104.16

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Solution

The fourth proportional to 15,074.76, 20,798.19 and 9,104.16 is: 12,560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.76 : 20,798.19 = 9,104.16 : x
  2. Step 2: Convert to fraction form
    15,074.76/20,798.19 = 9,104.16/x
  3. Step 3: Cross multiply
    15,074.76x = 20,798.19 × 9,104.16
  4. Step 4: Simplify right side
    15,074.76x = 189,350,049.47
  5. Step 5: Solve for x
    x = 189,350,049.47/15,074.76
  6. Step 6: Final answer
    x = 12,560.73

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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.