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Finding the Fourth Proportional to 55,058.79, 75,979.09 and 29,907.75

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Solution

The fourth proportional to 55,058.79, 75,979.09 and 29,907.75 is: 41,271.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,058.79 : 75,979.09 = 29,907.75 : x
  2. Step 2: Convert to fraction form
    55,058.79/75,979.09 = 29,907.75/x
  3. Step 3: Cross multiply
    55,058.79x = 75,979.09 × 29,907.75
  4. Step 4: Simplify right side
    55,058.79x = 2,272,363,628.95
  5. Step 5: Solve for x
    x = 2,272,363,628.95/55,058.79
  6. Step 6: Final answer
    x = 41,271.59

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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.