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Finding the Fourth Proportional to 117,906.90, 176,749.17 and 58,686.60

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Solution

The fourth proportional to 117,906.90, 176,749.17 and 58,686.60 is: 87,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,906.90 : 176,749.17 = 58,686.60 : x
  2. Step 2: Convert to fraction form
    117,906.90/176,749.17 = 58,686.60/x
  3. Step 3: Cross multiply
    117,906.90x = 176,749.17 × 58,686.60
  4. Step 4: Simplify right side
    117,906.90x = 10,372,807,840.12
  5. Step 5: Solve for x
    x = 10,372,807,840.12/117,906.90
  6. Step 6: Final answer
    x = 87,974.56

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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.