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Finding the Fourth Proportional to 98,610.71, 135,998.94 and 83,371.56

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Solution

The fourth proportional to 98,610.71, 135,998.94 and 83,371.56 is: 114,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,610.71 : 135,998.94 = 83,371.56 : x
  2. Step 2: Convert to fraction form
    98,610.71/135,998.94 = 83,371.56/x
  3. Step 3: Cross multiply
    98,610.71x = 135,998.94 × 83,371.56
  4. Step 4: Simplify right side
    98,610.71x = 11,338,443,786.15
  5. Step 5: Solve for x
    x = 11,338,443,786.15/98,610.71
  6. Step 6: Final answer
    x = 114,981.88

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1.5x scale

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.