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Finding the Third Proportional to 121,803.75 and 178,989.75

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Solution

The third proportional to 121,803.75 and 178,989.75 is: 263,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,803.75 : 178,989.75 = 178,989.75 : x
  2. Step 2: Convert to fraction form
    121,803.75/178,989.75 = 178,989.75/x
  3. Step 3: Cross multiply
    121,803.75x = 178,989.75 × 178,989.75
  4. Step 4: Simplify right side
    121,803.75x = 32,037,330,605.06
  5. Step 5: Solve for x
    x = 32,037,330,605.06/121,803.75
  6. Step 6: Final answer
    x = 263,024.17

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These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.