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Finding the Fourth Proportional to 28,930.50, 39,920.04 and 16,183.02

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Solution

The fourth proportional to 28,930.50, 39,920.04 and 16,183.02 is: 22,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.50 : 39,920.04 = 16,183.02 : x
  2. Step 2: Convert to fraction form
    28,930.50/39,920.04 = 16,183.02/x
  3. Step 3: Cross multiply
    28,930.50x = 39,920.04 × 16,183.02
  4. Step 4: Simplify right side
    28,930.50x = 646,026,805.72
  5. Step 5: Solve for x
    x = 646,026,805.72/28,930.50
  6. Step 6: Final answer
    x = 22,330.30

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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.