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Finding the Fourth Proportional to 165,443.76, 248,065.42 and 74,242.44

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Solution

The fourth proportional to 165,443.76, 248,065.42 and 74,242.44 is: 111,318.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,443.76 : 248,065.42 = 74,242.44 : x
  2. Step 2: Convert to fraction form
    165,443.76/248,065.42 = 74,242.44/x
  3. Step 3: Cross multiply
    165,443.76x = 248,065.42 × 74,242.44
  4. Step 4: Simplify right side
    165,443.76x = 18,416,982,060.42
  5. Step 5: Solve for x
    x = 18,416,982,060.42/165,443.76
  6. Step 6: Final answer
    x = 111,318.69

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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.