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Finding the Fourth Proportional to 653,187.78, 979,781.75 and 203,947.13

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Solution

The fourth proportional to 653,187.78, 979,781.75 and 203,947.13 is: 305,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,187.78 : 979,781.75 = 203,947.13 : x
  2. Step 2: Convert to fraction form
    653,187.78/979,781.75 = 203,947.13/x
  3. Step 3: Cross multiply
    653,187.78x = 979,781.75 × 203,947.13
  4. Step 4: Simplify right side
    653,187.78x = 199,823,670,785.04
  5. Step 5: Solve for x
    x = 199,823,670,785.04/653,187.78
  6. Step 6: Final answer
    x = 305,920.71

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Double scale
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Similar ratio
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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.