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Finding the Fourth Proportional to 136,751.44, 205,127.16 and 109,224.40

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Solution

The fourth proportional to 136,751.44, 205,127.16 and 109,224.40 is: 163,836.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,751.44 : 205,127.16 = 109,224.40 : x
  2. Step 2: Convert to fraction form
    136,751.44/205,127.16 = 109,224.40/x
  3. Step 3: Cross multiply
    136,751.44x = 205,127.16 × 109,224.40
  4. Step 4: Simplify right side
    136,751.44x = 22,404,890,974.70
  5. Step 5: Solve for x
    x = 22,404,890,974.70/136,751.44
  6. Step 6: Final answer
    x = 163,836.60

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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.