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Finding the Fourth Proportional to 133,791.40, 200,687.10 and 107,547.40

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Solution

The fourth proportional to 133,791.40, 200,687.10 and 107,547.40 is: 161,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,791.40 : 200,687.10 = 107,547.40 : x
  2. Step 2: Convert to fraction form
    133,791.40/200,687.10 = 107,547.40/x
  3. Step 3: Cross multiply
    133,791.40x = 200,687.10 × 107,547.40
  4. Step 4: Simplify right side
    133,791.40x = 21,583,375,818.54
  5. Step 5: Solve for x
    x = 21,583,375,818.54/133,791.40
  6. Step 6: Final answer
    x = 161,321.10

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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.