Home / 83,691,660.72-115,546,018.68-66,358,023.60

Finding the Fourth Proportional to 83,691,660.72, 115,546,018.68 and 66,358,023.60

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Solution

The fourth proportional to 83,691,660.72, 115,546,018.68 and 66,358,023.60 is: 91,614,927.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,691,660.72 : 115,546,018.68 = 66,358,023.60 : x
  2. Step 2: Convert to fraction form
    83,691,660.72/115,546,018.68 = 66,358,023.60/x
  3. Step 3: Cross multiply
    83,691,660.72x = 115,546,018.68 × 66,358,023.60
  4. Step 4: Simplify right side
    83,691,660.72x = 7,667,405,434,453,481
  5. Step 5: Solve for x
    x = 7,667,405,434,453,481/83,691,660.72
  6. Step 6: Final answer
    x = 91,614,927.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.