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Finding the Third Proportional to 3,017.50 and 4,639

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Solution

The third proportional to 3,017.50 and 4,639 is: 7,131.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,017.50 : 4,639 = 4,639 : x
  2. Step 2: Convert to fraction form
    3,017.50/4,639 = 4,639/x
  3. Step 3: Cross multiply
    3,017.50x = 4,639 × 4,639
  4. Step 4: Simplify right side
    3,017.50x = 21,520,321
  5. Step 5: Solve for x
    x = 21,520,321/3,017.50
  6. Step 6: Final answer
    x = 7,131.84

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.