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Finding the Third Proportional to 9,312.75 and 13,261.50

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Solution

The third proportional to 9,312.75 and 13,261.50 is: 18,884.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,312.75 : 13,261.50 = 13,261.50 : x
  2. Step 2: Convert to fraction form
    9,312.75/13,261.50 = 13,261.50/x
  3. Step 3: Cross multiply
    9,312.75x = 13,261.50 × 13,261.50
  4. Step 4: Simplify right side
    9,312.75x = 175,867,382.25
  5. Step 5: Solve for x
    x = 175,867,382.25/9,312.75
  6. Step 6: Final answer
    x = 18,884.58

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.