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Finding the Fourth Proportional to 39,963.91, 55,149.89 and 22,058.91

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Solution

The fourth proportional to 39,963.91, 55,149.89 and 22,058.91 is: 30,441.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,963.91 : 55,149.89 = 22,058.91 : x
  2. Step 2: Convert to fraction form
    39,963.91/55,149.89 = 22,058.91/x
  3. Step 3: Cross multiply
    39,963.91x = 55,149.89 × 22,058.91
  4. Step 4: Simplify right side
    39,963.91x = 1,216,546,460.02
  5. Step 5: Solve for x
    x = 1,216,546,460.02/39,963.91
  6. Step 6: Final answer
    x = 30,441.13

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1.5x scale

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.