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Finding the Fourth Proportional to 663,680.88, 995,387.40 and 190,239.12

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Solution

The fourth proportional to 663,680.88, 995,387.40 and 190,239.12 is: 285,320.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,680.88 : 995,387.40 = 190,239.12 : x
  2. Step 2: Convert to fraction form
    663,680.88/995,387.40 = 190,239.12/x
  3. Step 3: Cross multiply
    663,680.88x = 995,387.40 × 190,239.12
  4. Step 4: Simplify right side
    663,680.88x = 189,361,623,035.09
  5. Step 5: Solve for x
    x = 189,361,623,035.09/663,680.88
  6. Step 6: Final answer
    x = 285,320.29

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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.