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Finding the Fourth Proportional to 212,660.84, 318,991.26 and 62,889.46

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Solution

The fourth proportional to 212,660.84, 318,991.26 and 62,889.46 is: 94,334.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,660.84 : 318,991.26 = 62,889.46 : x
  2. Step 2: Convert to fraction form
    212,660.84/318,991.26 = 62,889.46/x
  3. Step 3: Cross multiply
    212,660.84x = 318,991.26 × 62,889.46
  4. Step 4: Simplify right side
    212,660.84x = 20,061,189,318.80
  5. Step 5: Solve for x
    x = 20,061,189,318.80/212,660.84
  6. Step 6: Final answer
    x = 94,334.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.