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Finding the Fourth Proportional to 711,937.36, 982,278.97 and 405,902.17

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Solution

The fourth proportional to 711,937.36, 982,278.97 and 405,902.17 is: 560,034.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,937.36 : 982,278.97 = 405,902.17 : x
  2. Step 2: Convert to fraction form
    711,937.36/982,278.97 = 405,902.17/x
  3. Step 3: Cross multiply
    711,937.36x = 982,278.97 × 405,902.17
  4. Step 4: Simplify right side
    711,937.36x = 398,709,165,468.37
  5. Step 5: Solve for x
    x = 398,709,165,468.37/711,937.36
  6. Step 6: Final answer
    x = 560,034.05

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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.