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Finding the Fourth Proportional to 663,677.20, 995,515.80 and 190,410.40

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Solution

The fourth proportional to 663,677.20, 995,515.80 and 190,410.40 is: 285,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,677.20 : 995,515.80 = 190,410.40 : x
  2. Step 2: Convert to fraction form
    663,677.20/995,515.80 = 190,410.40/x
  3. Step 3: Cross multiply
    663,677.20x = 995,515.80 × 190,410.40
  4. Step 4: Simplify right side
    663,677.20x = 189,556,561,684.32
  5. Step 5: Solve for x
    x = 189,556,561,684.32/663,677.20
  6. Step 6: Final answer
    x = 285,615.60

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Double scale
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Similar ratio
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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.