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Finding the Fourth Proportional to 663,713.20, 995,569.80 and 545,615.20

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Solution

The fourth proportional to 663,713.20, 995,569.80 and 545,615.20 is: 818,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,713.20 : 995,569.80 = 545,615.20 : x
  2. Step 2: Convert to fraction form
    663,713.20/995,569.80 = 545,615.20/x
  3. Step 3: Cross multiply
    663,713.20x = 995,569.80 × 545,615.20
  4. Step 4: Simplify right side
    663,713.20x = 543,198,015,540.96
  5. Step 5: Solve for x
    x = 543,198,015,540.96/663,713.20
  6. Step 6: Final answer
    x = 818,422.80

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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.