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Finding the Fourth Proportional to 29,506.80, 40,720.23 and 16,760.40

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Solution

The fourth proportional to 29,506.80, 40,720.23 and 16,760.40 is: 23,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,506.80 : 40,720.23 = 16,760.40 : x
  2. Step 2: Convert to fraction form
    29,506.80/40,720.23 = 16,760.40/x
  3. Step 3: Cross multiply
    29,506.80x = 40,720.23 × 16,760.40
  4. Step 4: Simplify right side
    29,506.80x = 682,487,342.89
  5. Step 5: Solve for x
    x = 682,487,342.89/29,506.80
  6. Step 6: Final answer
    x = 23,129.83

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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.