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Finding the Fourth Proportional to 212,640.88, 318,990.48 and 62,892.94

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Solution

The fourth proportional to 212,640.88, 318,990.48 and 62,892.94 is: 94,348.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,640.88 : 318,990.48 = 62,892.94 : x
  2. Step 2: Convert to fraction form
    212,640.88/318,990.48 = 62,892.94/x
  3. Step 3: Cross multiply
    212,640.88x = 318,990.48 × 62,892.94
  4. Step 4: Simplify right side
    212,640.88x = 20,062,249,119.21
  5. Step 5: Solve for x
    x = 20,062,249,119.21/212,640.88
  6. Step 6: Final answer
    x = 94,348.03

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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.