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Finding the Fourth Proportional to 136,068.96, 187,786.98 and 75,651.42

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Solution

The fourth proportional to 136,068.96, 187,786.98 and 75,651.42 is: 104,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,068.96 : 187,786.98 = 75,651.42 : x
  2. Step 2: Convert to fraction form
    136,068.96/187,786.98 = 75,651.42/x
  3. Step 3: Cross multiply
    136,068.96x = 187,786.98 × 75,651.42
  4. Step 4: Simplify right side
    136,068.96x = 14,206,351,694.51
  5. Step 5: Solve for x
    x = 14,206,351,694.51/136,068.96
  6. Step 6: Final answer
    x = 104,405.53

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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.