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Finding the Fourth Proportional to 217,143.73, 325,759.10 and 74,994.19

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Solution

The fourth proportional to 217,143.73, 325,759.10 and 74,994.19 is: 112,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,143.73 : 325,759.10 = 74,994.19 : x
  2. Step 2: Convert to fraction form
    217,143.73/325,759.10 = 74,994.19/x
  3. Step 3: Cross multiply
    217,143.73x = 325,759.10 × 74,994.19
  4. Step 4: Simplify right side
    217,143.73x = 24,430,039,839.63
  5. Step 5: Solve for x
    x = 24,430,039,839.63/217,143.73
  6. Step 6: Final answer
    x = 112,506.31

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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.