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Finding the Fourth Proportional to 661,863.44, 992,103.95 and 324,436.88

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Solution

The fourth proportional to 661,863.44, 992,103.95 and 324,436.88 is: 486,316.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,863.44 : 992,103.95 = 324,436.88 : x
  2. Step 2: Convert to fraction form
    661,863.44/992,103.95 = 324,436.88/x
  3. Step 3: Cross multiply
    661,863.44x = 992,103.95 × 324,436.88
  4. Step 4: Simplify right side
    661,863.44x = 321,875,103,590.97
  5. Step 5: Solve for x
    x = 321,875,103,590.97/661,863.44
  6. Step 6: Final answer
    x = 486,316.49

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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.