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Finding the Fourth Proportional to 212,409.87, 318,669.48 and 62,644.11

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Solution

The fourth proportional to 212,409.87, 318,669.48 and 62,644.11 is: 93,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,409.87 : 318,669.48 = 62,644.11 : x
  2. Step 2: Convert to fraction form
    212,409.87/318,669.48 = 62,644.11/x
  3. Step 3: Cross multiply
    212,409.87x = 318,669.48 × 62,644.11
  4. Step 4: Simplify right side
    212,409.87x = 19,962,765,958.76
  5. Step 5: Solve for x
    x = 19,962,765,958.76/212,409.87
  6. Step 6: Final answer
    x = 93,982.29

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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.