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Finding the Fourth Proportional to 89,751.96, 123,855.80 and 49,464.68

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Solution

The fourth proportional to 89,751.96, 123,855.80 and 49,464.68 is: 68,260.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,751.96 : 123,855.80 = 49,464.68 : x
  2. Step 2: Convert to fraction form
    89,751.96/123,855.80 = 49,464.68/x
  3. Step 3: Cross multiply
    89,751.96x = 123,855.80 × 49,464.68
  4. Step 4: Simplify right side
    89,751.96x = 6,126,487,513.14
  5. Step 5: Solve for x
    x = 6,126,487,513.14/89,751.96
  6. Step 6: Final answer
    x = 68,260.21

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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.