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Finding the Fourth Proportional to 624,648.78, 862,015.44 and 338,171.22

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Solution

The fourth proportional to 624,648.78, 862,015.44 and 338,171.22 is: 466,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,648.78 : 862,015.44 = 338,171.22 : x
  2. Step 2: Convert to fraction form
    624,648.78/862,015.44 = 338,171.22/x
  3. Step 3: Cross multiply
    624,648.78x = 862,015.44 × 338,171.22
  4. Step 4: Simplify right side
    624,648.78x = 291,508,813,003.64
  5. Step 5: Solve for x
    x = 291,508,813,003.64/624,648.78
  6. Step 6: Final answer
    x = 466,676.35

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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.