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Finding the Fourth Proportional to 711,359.66, 981,616.73 and 401,245.11

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Solution

The fourth proportional to 711,359.66, 981,616.73 and 401,245.11 is: 553,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,359.66 : 981,616.73 = 401,245.11 : x
  2. Step 2: Convert to fraction form
    711,359.66/981,616.73 = 401,245.11/x
  3. Step 3: Cross multiply
    711,359.66x = 981,616.73 × 401,245.11
  4. Step 4: Simplify right side
    711,359.66x = 393,868,912,806.69
  5. Step 5: Solve for x
    x = 393,868,912,806.69/711,359.66
  6. Step 6: Final answer
    x = 553,684.63

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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.