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Finding the Fourth Proportional to 217,081.31, 325,832.16 and 104,840.42

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Solution

The fourth proportional to 217,081.31, 325,832.16 and 104,840.42 is: 157,362.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,081.31 : 325,832.16 = 104,840.42 : x
  2. Step 2: Convert to fraction form
    217,081.31/325,832.16 = 104,840.42/x
  3. Step 3: Cross multiply
    217,081.31x = 325,832.16 × 104,840.42
  4. Step 4: Simplify right side
    217,081.31x = 34,160,380,503.91
  5. Step 5: Solve for x
    x = 34,160,380,503.91/217,081.31
  6. Step 6: Final answer
    x = 157,362.14

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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.