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Finding the Fourth Proportional to 170,647.20, 255,977.28 and 65,476.80

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Solution

The fourth proportional to 170,647.20, 255,977.28 and 65,476.80 is: 98,217.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,647.20 : 255,977.28 = 65,476.80 : x
  2. Step 2: Convert to fraction form
    170,647.20/255,977.28 = 65,476.80/x
  3. Step 3: Cross multiply
    170,647.20x = 255,977.28 × 65,476.80
  4. Step 4: Simplify right side
    170,647.20x = 16,760,573,167.10
  5. Step 5: Solve for x
    x = 16,760,573,167.10/170,647.20
  6. Step 6: Final answer
    x = 98,217.69

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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.