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Finding the Fourth Proportional to 115,974.60, 173,832.30 and 66,078.60

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Solution

The fourth proportional to 115,974.60, 173,832.30 and 66,078.60 is: 99,044.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,974.60 : 173,832.30 = 66,078.60 : x
  2. Step 2: Convert to fraction form
    115,974.60/173,832.30 = 66,078.60/x
  3. Step 3: Cross multiply
    115,974.60x = 173,832.30 × 66,078.60
  4. Step 4: Simplify right side
    115,974.60x = 11,486,595,018.78
  5. Step 5: Solve for x
    x = 11,486,595,018.78/115,974.60
  6. Step 6: Final answer
    x = 99,044.06

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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.