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Finding the Fourth Proportional to 136,725.30, 205,087.95 and 36,900.90

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Solution

The fourth proportional to 136,725.30, 205,087.95 and 36,900.90 is: 55,351.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,725.30 : 205,087.95 = 36,900.90 : x
  2. Step 2: Convert to fraction form
    136,725.30/205,087.95 = 36,900.90/x
  3. Step 3: Cross multiply
    136,725.30x = 205,087.95 × 36,900.90
  4. Step 4: Simplify right side
    136,725.30x = 7,567,929,934.16
  5. Step 5: Solve for x
    x = 7,567,929,934.16/136,725.30
  6. Step 6: Final answer
    x = 55,351.35

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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.