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Finding the Fourth Proportional to 162,808.40, 244,139.70 and 74,016.20

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Solution

The fourth proportional to 162,808.40, 244,139.70 and 74,016.20 is: 110,991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,808.40 : 244,139.70 = 74,016.20 : x
  2. Step 2: Convert to fraction form
    162,808.40/244,139.70 = 74,016.20/x
  3. Step 3: Cross multiply
    162,808.40x = 244,139.70 × 74,016.20
  4. Step 4: Simplify right side
    162,808.40x = 18,070,292,863.14
  5. Step 5: Solve for x
    x = 18,070,292,863.14/162,808.40
  6. Step 6: Final answer
    x = 110,991.16

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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.