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Finding the Fourth Proportional to 89,111.70, 133,584.49 and 44,686.54

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Solution

The fourth proportional to 89,111.70, 133,584.49 and 44,686.54 is: 66,988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,111.70 : 133,584.49 = 44,686.54 : x
  2. Step 2: Convert to fraction form
    89,111.70/133,584.49 = 44,686.54/x
  3. Step 3: Cross multiply
    89,111.70x = 133,584.49 × 44,686.54
  4. Step 4: Simplify right side
    89,111.70x = 5,969,428,627.84
  5. Step 5: Solve for x
    x = 5,969,428,627.84/89,111.70
  6. Step 6: Final answer
    x = 66,988.16

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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.