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Finding the Fourth Proportional to 217,804.52, 300,559.68 and 121,014.48

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Solution

The fourth proportional to 217,804.52, 300,559.68 and 121,014.48 is: 166,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,804.52 : 300,559.68 = 121,014.48 : x
  2. Step 2: Convert to fraction form
    217,804.52/300,559.68 = 121,014.48/x
  3. Step 3: Cross multiply
    217,804.52x = 300,559.68 × 121,014.48
  4. Step 4: Simplify right side
    217,804.52x = 36,372,074,511.27
  5. Step 5: Solve for x
    x = 36,372,074,511.27/217,804.52
  6. Step 6: Final answer
    x = 166,994.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.