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Finding the Fourth Proportional to 74,469.76, 111,505.40 and 62,660

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Solution

The fourth proportional to 74,469.76, 111,505.40 and 62,660 is: 93,822.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.76 : 111,505.40 = 62,660 : x
  2. Step 2: Convert to fraction form
    74,469.76/111,505.40 = 62,660/x
  3. Step 3: Cross multiply
    74,469.76x = 111,505.40 × 62,660
  4. Step 4: Simplify right side
    74,469.76x = 6,986,928,364
  5. Step 5: Solve for x
    x = 6,986,928,364/74,469.76
  6. Step 6: Final answer
    x = 93,822.36

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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.