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Finding the Fourth Proportional to 217,305.11, 325,952.69 and 57,392.31

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Solution

The fourth proportional to 217,305.11, 325,952.69 and 57,392.31 is: 86,087.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,305.11 : 325,952.69 = 57,392.31 : x
  2. Step 2: Convert to fraction form
    217,305.11/325,952.69 = 57,392.31/x
  3. Step 3: Cross multiply
    217,305.11x = 325,952.69 × 57,392.31
  4. Step 4: Simplify right side
    217,305.11x = 18,707,179,088.01
  5. Step 5: Solve for x
    x = 18,707,179,088.01/217,305.11
  6. Step 6: Final answer
    x = 86,087.16

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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.