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Finding the Fourth Proportional to 217,300.12, 325,935.90 and 75,112.31

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Solution

The fourth proportional to 217,300.12, 325,935.90 and 75,112.31 is: 112,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,300.12 : 325,935.90 = 75,112.31 : x
  2. Step 2: Convert to fraction form
    217,300.12/325,935.90 = 75,112.31/x
  3. Step 3: Cross multiply
    217,300.12x = 325,935.90 × 75,112.31
  4. Step 4: Simplify right side
    217,300.12x = 24,481,799,175.77
  5. Step 5: Solve for x
    x = 24,481,799,175.77/217,300.12
  6. Step 6: Final answer
    x = 112,663.53

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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.