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Finding the Fourth Proportional to 136,086.33, 187,788.50 and 75,653.30

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Solution

The fourth proportional to 136,086.33, 187,788.50 and 75,653.30 is: 104,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,086.33 : 187,788.50 = 75,653.30 : x
  2. Step 2: Convert to fraction form
    136,086.33/187,788.50 = 75,653.30/x
  3. Step 3: Cross multiply
    136,086.33x = 187,788.50 × 75,653.30
  4. Step 4: Simplify right side
    136,086.33x = 14,206,819,727.05
  5. Step 5: Solve for x
    x = 14,206,819,727.05/136,086.33
  6. Step 6: Final answer
    x = 104,395.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.