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Finding the Fourth Proportional to 697,892.44, 963,015.06 and 391,906.84

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Solution

The fourth proportional to 697,892.44, 963,015.06 and 391,906.84 is: 540,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,892.44 : 963,015.06 = 391,906.84 : x
  2. Step 2: Convert to fraction form
    697,892.44/963,015.06 = 391,906.84/x
  3. Step 3: Cross multiply
    697,892.44x = 963,015.06 × 391,906.84
  4. Step 4: Simplify right side
    697,892.44x = 377,412,189,037.01
  5. Step 5: Solve for x
    x = 377,412,189,037.01/697,892.44
  6. Step 6: Final answer
    x = 540,788.48

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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.