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Finding the Fourth Proportional to 89,980.44, 135,016.44 and 54,526.47

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Solution

The fourth proportional to 89,980.44, 135,016.44 and 54,526.47 is: 81,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,980.44 : 135,016.44 = 54,526.47 : x
  2. Step 2: Convert to fraction form
    89,980.44/135,016.44 = 54,526.47/x
  3. Step 3: Cross multiply
    89,980.44x = 135,016.44 × 54,526.47
  4. Step 4: Simplify right side
    89,980.44x = 7,361,969,865.17
  5. Step 5: Solve for x
    x = 7,361,969,865.17/89,980.44
  6. Step 6: Final answer
    x = 81,817.45

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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.