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Finding the Fourth Proportional to 29,640.21, 40,904.37 and 16,211.22

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Solution

The fourth proportional to 29,640.21, 40,904.37 and 16,211.22 is: 22,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,640.21 : 40,904.37 = 16,211.22 : x
  2. Step 2: Convert to fraction form
    29,640.21/40,904.37 = 16,211.22/x
  3. Step 3: Cross multiply
    29,640.21x = 40,904.37 × 16,211.22
  4. Step 4: Simplify right side
    29,640.21x = 663,109,741.03
  5. Step 5: Solve for x
    x = 663,109,741.03/29,640.21
  6. Step 6: Final answer
    x = 22,371.97

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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.