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Finding the Fourth Proportional to 669,286.17, 923,608.31 and 363,355.79

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Solution

The fourth proportional to 669,286.17, 923,608.31 and 363,355.79 is: 501,427.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,286.17 : 923,608.31 = 363,355.79 : x
  2. Step 2: Convert to fraction form
    669,286.17/923,608.31 = 363,355.79/x
  3. Step 3: Cross multiply
    669,286.17x = 923,608.31 × 363,355.79
  4. Step 4: Simplify right side
    669,286.17x = 335,598,420,695.79
  5. Step 5: Solve for x
    x = 335,598,420,695.79/669,286.17
  6. Step 6: Final answer
    x = 501,427.39

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Half scale
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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.