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Finding the Third Proportional to 4,969.50 and 8,157

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Solution

The third proportional to 4,969.50 and 8,157 is: 13,389.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.50 : 8,157 = 8,157 : x
  2. Step 2: Convert to fraction form
    4,969.50/8,157 = 8,157/x
  3. Step 3: Cross multiply
    4,969.50x = 8,157 × 8,157
  4. Step 4: Simplify right side
    4,969.50x = 66,536,649
  5. Step 5: Solve for x
    x = 66,536,649/4,969.50
  6. Step 6: Final answer
    x = 13,389.00

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.