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Finding the Fourth Proportional to 29,431.80, 40,610.08 and 16,511.48

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Solution

The fourth proportional to 29,431.80, 40,610.08 and 16,511.48 is: 22,782.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,431.80 : 40,610.08 = 16,511.48 : x
  2. Step 2: Convert to fraction form
    29,431.80/40,610.08 = 16,511.48/x
  3. Step 3: Cross multiply
    29,431.80x = 40,610.08 × 16,511.48
  4. Step 4: Simplify right side
    29,431.80x = 670,532,523.72
  5. Step 5: Solve for x
    x = 670,532,523.72/29,431.80
  6. Step 6: Final answer
    x = 22,782.59

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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.