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Finding the Fourth Proportional to 252,620.72, 348,619.44 and 139,443.44

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Solution

The fourth proportional to 252,620.72, 348,619.44 and 139,443.44 is: 192,433.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,620.72 : 348,619.44 = 139,443.44 : x
  2. Step 2: Convert to fraction form
    252,620.72/348,619.44 = 139,443.44/x
  3. Step 3: Cross multiply
    252,620.72x = 348,619.44 × 139,443.44
  4. Step 4: Simplify right side
    252,620.72x = 48,612,693,964.47
  5. Step 5: Solve for x
    x = 48,612,693,964.47/252,620.72
  6. Step 6: Final answer
    x = 192,433.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.