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Finding the Fourth Proportional to 115,891.70, 173,837.55 and 82,714.10

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Solution

The fourth proportional to 115,891.70, 173,837.55 and 82,714.10 is: 124,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,891.70 : 173,837.55 = 82,714.10 : x
  2. Step 2: Convert to fraction form
    115,891.70/173,837.55 = 82,714.10/x
  3. Step 3: Cross multiply
    115,891.70x = 173,837.55 × 82,714.10
  4. Step 4: Simplify right side
    115,891.70x = 14,378,816,494.46
  5. Step 5: Solve for x
    x = 14,378,816,494.46/115,891.70
  6. Step 6: Final answer
    x = 124,071.15

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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.