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Finding the Fourth Proportional to 28,958.52, 39,963.60 and 16,383

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Solution

The fourth proportional to 28,958.52, 39,963.60 and 16,383 is: 22,609.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,958.52 : 39,963.60 = 16,383 : x
  2. Step 2: Convert to fraction form
    28,958.52/39,963.60 = 16,383/x
  3. Step 3: Cross multiply
    28,958.52x = 39,963.60 × 16,383
  4. Step 4: Simplify right side
    28,958.52x = 654,723,658.80
  5. Step 5: Solve for x
    x = 654,723,658.80/28,958.52
  6. Step 6: Final answer
    x = 22,609.02

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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.