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Finding the Fourth Proportional to 69,908.48, 104,775.15 and 55,058.75

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Solution

The fourth proportional to 69,908.48, 104,775.15 and 55,058.75 is: 82,519.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,908.48 : 104,775.15 = 55,058.75 : x
  2. Step 2: Convert to fraction form
    69,908.48/104,775.15 = 55,058.75/x
  3. Step 3: Cross multiply
    69,908.48x = 104,775.15 × 55,058.75
  4. Step 4: Simplify right side
    69,908.48x = 5,768,788,790.06
  5. Step 5: Solve for x
    x = 5,768,788,790.06/69,908.48
  6. Step 6: Final answer
    x = 82,519.16

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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.