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Finding the Fourth Proportional to 169,974.40, 254,961.60 and 140,425.60

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Solution

The fourth proportional to 169,974.40, 254,961.60 and 140,425.60 is: 210,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,974.40 : 254,961.60 = 140,425.60 : x
  2. Step 2: Convert to fraction form
    169,974.40/254,961.60 = 140,425.60/x
  3. Step 3: Cross multiply
    169,974.40x = 254,961.60 × 140,425.60
  4. Step 4: Simplify right side
    169,974.40x = 35,803,135,656.96
  5. Step 5: Solve for x
    x = 35,803,135,656.96/169,974.40
  6. Step 6: Final answer
    x = 210,638.40

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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.