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Finding the Fourth Proportional to 114,612.80, 171,919.20 and 112,863.20

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Solution

The fourth proportional to 114,612.80, 171,919.20 and 112,863.20 is: 169,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,612.80 : 171,919.20 = 112,863.20 : x
  2. Step 2: Convert to fraction form
    114,612.80/171,919.20 = 112,863.20/x
  3. Step 3: Cross multiply
    114,612.80x = 171,919.20 × 112,863.20
  4. Step 4: Simplify right side
    114,612.80x = 19,403,351,053.44
  5. Step 5: Solve for x
    x = 19,403,351,053.44/114,612.80
  6. Step 6: Final answer
    x = 169,294.80

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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.