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Finding the Fourth Proportional to 191,991.81, 288,116.27 and 79,672.14

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Solution

The fourth proportional to 191,991.81, 288,116.27 and 79,672.14 is: 119,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,991.81 : 288,116.27 = 79,672.14 : x
  2. Step 2: Convert to fraction form
    191,991.81/288,116.27 = 79,672.14/x
  3. Step 3: Cross multiply
    191,991.81x = 288,116.27 × 79,672.14
  4. Step 4: Simplify right side
    191,991.81x = 22,954,839,700.13
  5. Step 5: Solve for x
    x = 22,954,839,700.13/191,991.81
  6. Step 6: Final answer
    x = 119,561.55

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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.