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Finding the Fourth Proportional to 29,478.69, 40,679.30 and 16,049.99

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Solution

The fourth proportional to 29,478.69, 40,679.30 and 16,049.99 is: 22,148.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,478.69 : 40,679.30 = 16,049.99 : x
  2. Step 2: Convert to fraction form
    29,478.69/40,679.30 = 16,049.99/x
  3. Step 3: Cross multiply
    29,478.69x = 40,679.30 × 16,049.99
  4. Step 4: Simplify right side
    29,478.69x = 652,902,074.56
  5. Step 5: Solve for x
    x = 652,902,074.56/29,478.69
  6. Step 6: Final answer
    x = 22,148.27

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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.