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Finding the Fourth Proportional to 28,106.66, 38,793.66 and 16,176.90

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Solution

The fourth proportional to 28,106.66, 38,793.66 and 16,176.90 is: 22,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.66 : 38,793.66 = 16,176.90 : x
  2. Step 2: Convert to fraction form
    28,106.66/38,793.66 = 16,176.90/x
  3. Step 3: Cross multiply
    28,106.66x = 38,793.66 × 16,176.90
  4. Step 4: Simplify right side
    28,106.66x = 627,561,158.45
  5. Step 5: Solve for x
    x = 627,561,158.45/28,106.66
  6. Step 6: Final answer
    x = 22,327.85

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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.