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Finding the Fourth Proportional to 115,872.99, 173,669.13 and 49,173

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Solution

The fourth proportional to 115,872.99, 173,669.13 and 49,173 is: 73,699.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,872.99 : 173,669.13 = 49,173 : x
  2. Step 2: Convert to fraction form
    115,872.99/173,669.13 = 49,173/x
  3. Step 3: Cross multiply
    115,872.99x = 173,669.13 × 49,173
  4. Step 4: Simplify right side
    115,872.99x = 8,539,832,129.49
  5. Step 5: Solve for x
    x = 8,539,832,129.49/115,872.99
  6. Step 6: Final answer
    x = 73,699.94

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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.