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Finding the Fourth Proportional to 89,896.74, 124,065.45 and 49,619.22

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Solution

The fourth proportional to 89,896.74, 124,065.45 and 49,619.22 is: 68,478.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.74 : 124,065.45 = 49,619.22 : x
  2. Step 2: Convert to fraction form
    89,896.74/124,065.45 = 49,619.22/x
  3. Step 3: Cross multiply
    89,896.74x = 124,065.45 × 49,619.22
  4. Step 4: Simplify right side
    89,896.74x = 6,156,030,857.95
  5. Step 5: Solve for x
    x = 6,156,030,857.95/89,896.74
  6. Step 6: Final answer
    x = 68,478.91

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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.