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Finding the Fourth Proportional to 111,642.18, 154,065.96 and 63,896.46

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Solution

The fourth proportional to 111,642.18, 154,065.96 and 63,896.46 is: 88,176.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,642.18 : 154,065.96 = 63,896.46 : x
  2. Step 2: Convert to fraction form
    111,642.18/154,065.96 = 63,896.46/x
  3. Step 3: Cross multiply
    111,642.18x = 154,065.96 × 63,896.46
  4. Step 4: Simplify right side
    111,642.18x = 9,844,269,450.50
  5. Step 5: Solve for x
    x = 9,844,269,450.50/111,642.18
  6. Step 6: Final answer
    x = 88,176.97

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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.