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Finding the Fourth Proportional to 253,246.70, 349,476.22 and 140,069.45

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Solution

The fourth proportional to 253,246.70, 349,476.22 and 140,069.45 is: 193,293.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,246.70 : 349,476.22 = 140,069.45 : x
  2. Step 2: Convert to fraction form
    253,246.70/349,476.22 = 140,069.45/x
  3. Step 3: Cross multiply
    253,246.70x = 349,476.22 × 140,069.45
  4. Step 4: Simplify right side
    253,246.70x = 48,950,942,972.26
  5. Step 5: Solve for x
    x = 48,950,942,972.26/253,246.70
  6. Step 6: Final answer
    x = 193,293.51

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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.