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Finding the Fourth Proportional to 167,428.60, 251,142.90 and 74,116.60

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Solution

The fourth proportional to 167,428.60, 251,142.90 and 74,116.60 is: 111,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,428.60 : 251,142.90 = 74,116.60 : x
  2. Step 2: Convert to fraction form
    167,428.60/251,142.90 = 74,116.60/x
  3. Step 3: Cross multiply
    167,428.60x = 251,142.90 × 74,116.60
  4. Step 4: Simplify right side
    167,428.60x = 18,613,857,862.14
  5. Step 5: Solve for x
    x = 18,613,857,862.14/167,428.60
  6. Step 6: Final answer
    x = 111,174.90

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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.