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Finding the Fourth Proportional to 29,169.86, 40,250.07 and 16,421.18

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Solution

The fourth proportional to 29,169.86, 40,250.07 and 16,421.18 is: 22,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,169.86 : 40,250.07 = 16,421.18 : x
  2. Step 2: Convert to fraction form
    29,169.86/40,250.07 = 16,421.18/x
  3. Step 3: Cross multiply
    29,169.86x = 40,250.07 × 16,421.18
  4. Step 4: Simplify right side
    29,169.86x = 660,953,644.48
  5. Step 5: Solve for x
    x = 660,953,644.48/29,169.86
  6. Step 6: Final answer
    x = 22,658.79

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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.