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Finding the Fourth Proportional to 590,391.28, 885,521.31 and 211,296.70

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Solution

The fourth proportional to 590,391.28, 885,521.31 and 211,296.70 is: 316,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,391.28 : 885,521.31 = 211,296.70 : x
  2. Step 2: Convert to fraction form
    590,391.28/885,521.31 = 211,296.70/x
  3. Step 3: Cross multiply
    590,391.28x = 885,521.31 × 211,296.70
  4. Step 4: Simplify right side
    590,391.28x = 187,107,730,582.68
  5. Step 5: Solve for x
    x = 187,107,730,582.68/590,391.28
  6. Step 6: Final answer
    x = 316,921.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.