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Finding the Fourth Proportional to 15,160.10, 20,919.66 and 8,444.66

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Solution

The fourth proportional to 15,160.10, 20,919.66 and 8,444.66 is: 11,652.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.10 : 20,919.66 = 8,444.66 : x
  2. Step 2: Convert to fraction form
    15,160.10/20,919.66 = 8,444.66/x
  3. Step 3: Cross multiply
    15,160.10x = 20,919.66 × 8,444.66
  4. Step 4: Simplify right side
    15,160.10x = 176,659,416.02
  5. Step 5: Solve for x
    x = 176,659,416.02/15,160.10
  6. Step 6: Final answer
    x = 11,652.92

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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.