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Finding the Fourth Proportional to 212,652.48, 318,978.56 and 62,894.72

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Solution

The fourth proportional to 212,652.48, 318,978.56 and 62,894.72 is: 94,342.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,652.48 : 318,978.56 = 62,894.72 : x
  2. Step 2: Convert to fraction form
    212,652.48/318,978.56 = 62,894.72/x
  3. Step 3: Cross multiply
    212,652.48x = 318,978.56 × 62,894.72
  4. Step 4: Simplify right side
    212,652.48x = 20,062,067,217.20
  5. Step 5: Solve for x
    x = 20,062,067,217.20/212,652.48
  6. Step 6: Final answer
    x = 94,342.03

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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.