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Finding the Fourth Proportional to 711,522.78, 981,954.71 and 405,606.44

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Solution

The fourth proportional to 711,522.78, 981,954.71 and 405,606.44 is: 559,767.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,522.78 : 981,954.71 = 405,606.44 : x
  2. Step 2: Convert to fraction form
    711,522.78/981,954.71 = 405,606.44/x
  3. Step 3: Cross multiply
    711,522.78x = 981,954.71 × 405,606.44
  4. Step 4: Simplify right side
    711,522.78x = 398,287,147,226.53
  5. Step 5: Solve for x
    x = 398,287,147,226.53/711,522.78
  6. Step 6: Final answer
    x = 559,767.25

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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.