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Finding the Fourth Proportional to 198,636.30, 297,947.16 and 65,512.80

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Solution

The fourth proportional to 198,636.30, 297,947.16 and 65,512.80 is: 98,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,636.30 : 297,947.16 = 65,512.80 : x
  2. Step 2: Convert to fraction form
    198,636.30/297,947.16 = 65,512.80/x
  3. Step 3: Cross multiply
    198,636.30x = 297,947.16 × 65,512.80
  4. Step 4: Simplify right side
    198,636.30x = 19,519,352,703.65
  5. Step 5: Solve for x
    x = 19,519,352,703.65/198,636.30
  6. Step 6: Final answer
    x = 98,266.80

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1.5x scale

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.