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Finding the Fourth Proportional to 74,427.54, 111,391.80 and 61,099.80

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Solution

The fourth proportional to 74,427.54, 111,391.80 and 61,099.80 is: 91,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,427.54 : 111,391.80 = 61,099.80 : x
  2. Step 2: Convert to fraction form
    74,427.54/111,391.80 = 61,099.80/x
  3. Step 3: Cross multiply
    74,427.54x = 111,391.80 × 61,099.80
  4. Step 4: Simplify right side
    74,427.54x = 6,806,016,701.64
  5. Step 5: Solve for x
    x = 6,806,016,701.64/74,427.54
  6. Step 6: Final answer
    x = 91,444.87

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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.