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Finding the Fourth Proportional to 212,447.63, 318,680.24 and 62,687.92

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Solution

The fourth proportional to 212,447.63, 318,680.24 and 62,687.92 is: 94,034.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,447.63 : 318,680.24 = 62,687.92 : x
  2. Step 2: Convert to fraction form
    212,447.63/318,680.24 = 62,687.92/x
  3. Step 3: Cross multiply
    212,447.63x = 318,680.24 × 62,687.92
  4. Step 4: Simplify right side
    212,447.63x = 19,977,400,750.72
  5. Step 5: Solve for x
    x = 19,977,400,750.72/212,447.63
  6. Step 6: Final answer
    x = 94,034.47

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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.