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Finding the Fourth Proportional to 681,365.73, 940,272.53 and 379,553.25

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Solution

The fourth proportional to 681,365.73, 940,272.53 and 379,553.25 is: 523,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,365.73 : 940,272.53 = 379,553.25 : x
  2. Step 2: Convert to fraction form
    681,365.73/940,272.53 = 379,553.25/x
  3. Step 3: Cross multiply
    681,365.73x = 940,272.53 × 379,553.25
  4. Step 4: Simplify right side
    681,365.73x = 356,883,492,749.46
  5. Step 5: Solve for x
    x = 356,883,492,749.46/681,365.73
  6. Step 6: Final answer
    x = 523,776.70

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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.