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Finding the Fourth Proportional to 29,361.78, 40,509.45 and 16,613.19

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Solution

The fourth proportional to 29,361.78, 40,509.45 and 16,613.19 is: 22,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,361.78 : 40,509.45 = 16,613.19 : x
  2. Step 2: Convert to fraction form
    29,361.78/40,509.45 = 16,613.19/x
  3. Step 3: Cross multiply
    29,361.78x = 40,509.45 × 16,613.19
  4. Step 4: Simplify right side
    29,361.78x = 672,991,189.65
  5. Step 5: Solve for x
    x = 672,991,189.65/29,361.78
  6. Step 6: Final answer
    x = 22,920.65

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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.