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Finding the Fourth Proportional to 252,687.94, 348,713.85 and 139,503.94

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Solution

The fourth proportional to 252,687.94, 348,713.85 and 139,503.94 is: 192,517.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,687.94 : 348,713.85 = 139,503.94 : x
  2. Step 2: Convert to fraction form
    252,687.94/348,713.85 = 139,503.94/x
  3. Step 3: Cross multiply
    252,687.94x = 348,713.85 × 139,503.94
  4. Step 4: Simplify right side
    252,687.94x = 48,646,956,007.57
  5. Step 5: Solve for x
    x = 48,646,956,007.57/252,687.94
  6. Step 6: Final answer
    x = 192,517.92

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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.