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Finding the Fourth Proportional to 610,797.39, 842,901.11 and 356,197.78

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Solution

The fourth proportional to 610,797.39, 842,901.11 and 356,197.78 is: 491,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,797.39 : 842,901.11 = 356,197.78 : x
  2. Step 2: Convert to fraction form
    610,797.39/842,901.11 = 356,197.78/x
  3. Step 3: Cross multiply
    610,797.39x = 842,901.11 × 356,197.78
  4. Step 4: Simplify right side
    610,797.39x = 300,239,504,141.54
  5. Step 5: Solve for x
    x = 300,239,504,141.54/610,797.39
  6. Step 6: Final answer
    x = 491,553.35

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.