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Finding the Third Proportional to 2,886.75 and 6,421.50

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Solution

The third proportional to 2,886.75 and 6,421.50 is: 14,284.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.75 : 6,421.50 = 6,421.50 : x
  2. Step 2: Convert to fraction form
    2,886.75/6,421.50 = 6,421.50/x
  3. Step 3: Cross multiply
    2,886.75x = 6,421.50 × 6,421.50
  4. Step 4: Simplify right side
    2,886.75x = 41,235,662.25
  5. Step 5: Solve for x
    x = 41,235,662.25/2,886.75
  6. Step 6: Final answer
    x = 14,284.46

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.