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Finding the Fourth Proportional to 162,820.80, 244,231.20 and 74,247.30

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Solution

The fourth proportional to 162,820.80, 244,231.20 and 74,247.30 is: 111,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,820.80 : 244,231.20 = 74,247.30 : x
  2. Step 2: Convert to fraction form
    162,820.80/244,231.20 = 74,247.30/x
  3. Step 3: Cross multiply
    162,820.80x = 244,231.20 × 74,247.30
  4. Step 4: Simplify right side
    162,820.80x = 18,133,507,175.76
  5. Step 5: Solve for x
    x = 18,133,507,175.76/162,820.80
  6. Step 6: Final answer
    x = 111,370.95

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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.