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Finding the Fourth Proportional to 136,446.10, 204,669.15 and 122,011.90

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Solution

The fourth proportional to 136,446.10, 204,669.15 and 122,011.90 is: 183,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,446.10 : 204,669.15 = 122,011.90 : x
  2. Step 2: Convert to fraction form
    136,446.10/204,669.15 = 122,011.90/x
  3. Step 3: Cross multiply
    136,446.10x = 204,669.15 × 122,011.90
  4. Step 4: Simplify right side
    136,446.10x = 24,972,071,862.89
  5. Step 5: Solve for x
    x = 24,972,071,862.89/136,446.10
  6. Step 6: Final answer
    x = 183,017.85

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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.