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Finding the Fourth Proportional to 98,480.52, 147,729.78 and 39,301.80

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Solution

The fourth proportional to 98,480.52, 147,729.78 and 39,301.80 is: 58,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,480.52 : 147,729.78 = 39,301.80 : x
  2. Step 2: Convert to fraction form
    98,480.52/147,729.78 = 39,301.80/x
  3. Step 3: Cross multiply
    98,480.52x = 147,729.78 × 39,301.80
  4. Step 4: Simplify right side
    98,480.52x = 5,806,046,267.60
  5. Step 5: Solve for x
    x = 5,806,046,267.60/98,480.52
  6. Step 6: Final answer
    x = 58,956.29

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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.