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Finding the Fourth Proportional to 39,909.66, 55,077.66 and 22,008.48

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Solution

The fourth proportional to 39,909.66, 55,077.66 and 22,008.48 is: 30,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,909.66 : 55,077.66 = 22,008.48 : x
  2. Step 2: Convert to fraction form
    39,909.66/55,077.66 = 22,008.48/x
  3. Step 3: Cross multiply
    39,909.66x = 55,077.66 × 22,008.48
  4. Step 4: Simplify right side
    39,909.66x = 1,212,175,578.56
  5. Step 5: Solve for x
    x = 1,212,175,578.56/39,909.66
  6. Step 6: Final answer
    x = 30,372.99

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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.