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Finding the Third Proportional to 91,426.50 and 121,347

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Solution

The third proportional to 91,426.50 and 121,347 is: 161,059.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,426.50 : 121,347 = 121,347 : x
  2. Step 2: Convert to fraction form
    91,426.50/121,347 = 121,347/x
  3. Step 3: Cross multiply
    91,426.50x = 121,347 × 121,347
  4. Step 4: Simplify right side
    91,426.50x = 14,725,094,409
  5. Step 5: Solve for x
    x = 14,725,094,409/91,426.50
  6. Step 6: Final answer
    x = 161,059.37

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.