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Finding the Fourth Proportional to 198,720.80, 298,081.20 and 183,514.40

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Solution

The fourth proportional to 198,720.80, 298,081.20 and 183,514.40 is: 275,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,720.80 : 298,081.20 = 183,514.40 : x
  2. Step 2: Convert to fraction form
    198,720.80/298,081.20 = 183,514.40/x
  3. Step 3: Cross multiply
    198,720.80x = 298,081.20 × 183,514.40
  4. Step 4: Simplify right side
    198,720.80x = 54,702,192,569.28
  5. Step 5: Solve for x
    x = 54,702,192,569.28/198,720.80
  6. Step 6: Final answer
    x = 275,271.60

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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.