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Finding the Fourth Proportional to 82,668.54, 123,933.60 and 38,327.16

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Solution

The fourth proportional to 82,668.54, 123,933.60 and 38,327.16 is: 57,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,668.54 : 123,933.60 = 38,327.16 : x
  2. Step 2: Convert to fraction form
    82,668.54/123,933.60 = 38,327.16/x
  3. Step 3: Cross multiply
    82,668.54x = 123,933.60 × 38,327.16
  4. Step 4: Simplify right side
    82,668.54x = 4,750,022,916.58
  5. Step 5: Solve for x
    x = 4,750,022,916.58/82,668.54
  6. Step 6: Final answer
    x = 57,458.65

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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.