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Finding the Fourth Proportional to 15,168.46, 20,933.12 and 8,454.08

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Solution

The fourth proportional to 15,168.46, 20,933.12 and 8,454.08 is: 11,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.46 : 20,933.12 = 8,454.08 : x
  2. Step 2: Convert to fraction form
    15,168.46/20,933.12 = 8,454.08/x
  3. Step 3: Cross multiply
    15,168.46x = 20,933.12 × 8,454.08
  4. Step 4: Simplify right side
    15,168.46x = 176,970,344.60
  5. Step 5: Solve for x
    x = 176,970,344.60/15,168.46
  6. Step 6: Final answer
    x = 11,667.00

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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.