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Finding the Fourth Proportional to 275,741.70, 413,612.55 and 117,986.10

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Solution

The fourth proportional to 275,741.70, 413,612.55 and 117,986.10 is: 176,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,741.70 : 413,612.55 = 117,986.10 : x
  2. Step 2: Convert to fraction form
    275,741.70/413,612.55 = 117,986.10/x
  3. Step 3: Cross multiply
    275,741.70x = 413,612.55 × 117,986.10
  4. Step 4: Simplify right side
    275,741.70x = 48,800,531,685.56
  5. Step 5: Solve for x
    x = 48,800,531,685.56/275,741.70
  6. Step 6: Final answer
    x = 176,979.15

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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.