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Finding the Fourth Proportional to 20,482.66, 30,725.66 and 5,691.58

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Solution

The fourth proportional to 20,482.66, 30,725.66 and 5,691.58 is: 8,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.66 : 30,725.66 = 5,691.58 : x
  2. Step 2: Convert to fraction form
    20,482.66/30,725.66 = 5,691.58/x
  3. Step 3: Cross multiply
    20,482.66x = 30,725.66 × 5,691.58
  4. Step 4: Simplify right side
    20,482.66x = 174,877,551.94
  5. Step 5: Solve for x
    x = 174,877,551.94/20,482.66
  6. Step 6: Final answer
    x = 8,537.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.