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Finding the Fourth Proportional to 71,672.14, 107,508.46 and 21,752.66

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Solution

The fourth proportional to 71,672.14, 107,508.46 and 21,752.66 is: 32,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,672.14 : 107,508.46 = 21,752.66 : x
  2. Step 2: Convert to fraction form
    71,672.14/107,508.46 = 21,752.66/x
  3. Step 3: Cross multiply
    71,672.14x = 107,508.46 × 21,752.66
  4. Step 4: Simplify right side
    71,672.14x = 2,338,594,977.50
  5. Step 5: Solve for x
    x = 2,338,594,977.50/71,672.14
  6. Step 6: Final answer
    x = 32,629.07

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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.