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Finding the Fourth Proportional to 16,641.72, 22,790.70 and 16,423.02

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Solution

The fourth proportional to 16,641.72, 22,790.70 and 16,423.02 is: 22,491.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,641.72 : 22,790.70 = 16,423.02 : x
  2. Step 2: Convert to fraction form
    16,641.72/22,790.70 = 16,423.02/x
  3. Step 3: Cross multiply
    16,641.72x = 22,790.70 × 16,423.02
  4. Step 4: Simplify right side
    16,641.72x = 374,292,121.91
  5. Step 5: Solve for x
    x = 374,292,121.91/16,641.72
  6. Step 6: Final answer
    x = 22,491.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.