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Finding the Third Proportional to 18,569.50 and 28,779

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Solution

The third proportional to 18,569.50 and 28,779 is: 44,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.50 : 28,779 = 28,779 : x
  2. Step 2: Convert to fraction form
    18,569.50/28,779 = 28,779/x
  3. Step 3: Cross multiply
    18,569.50x = 28,779 × 28,779
  4. Step 4: Simplify right side
    18,569.50x = 828,230,841
  5. Step 5: Solve for x
    x = 828,230,841/18,569.50
  6. Step 6: Final answer
    x = 44,601.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.