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Finding the Fourth Proportional to 624,648.78, 862,014.23 and 338,168.79

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Solution

The fourth proportional to 624,648.78, 862,014.23 and 338,168.79 is: 466,672.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,648.78 : 862,014.23 = 338,168.79 : x
  2. Step 2: Convert to fraction form
    624,648.78/862,014.23 = 338,168.79/x
  3. Step 3: Cross multiply
    624,648.78x = 862,014.23 × 338,168.79
  4. Step 4: Simplify right side
    624,648.78x = 291,506,309,121.88
  5. Step 5: Solve for x
    x = 291,506,309,121.88/624,648.78
  6. Step 6: Final answer
    x = 466,672.34

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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.