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Finding the Third Proportional to 76,261.50 and 99,063

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Solution

The third proportional to 76,261.50 and 99,063 is: 128,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,261.50 : 99,063 = 99,063 : x
  2. Step 2: Convert to fraction form
    76,261.50/99,063 = 99,063/x
  3. Step 3: Cross multiply
    76,261.50x = 99,063 × 99,063
  4. Step 4: Simplify right side
    76,261.50x = 9,813,477,969
  5. Step 5: Solve for x
    x = 9,813,477,969/76,261.50
  6. Step 6: Final answer
    x = 128,681.94

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.