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Finding the Fourth Proportional to 140,510.31, 210,791.43 and 44,471.70

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Solution

The fourth proportional to 140,510.31, 210,791.43 and 44,471.70 is: 66,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,510.31 : 210,791.43 = 44,471.70 : x
  2. Step 2: Convert to fraction form
    140,510.31/210,791.43 = 44,471.70/x
  3. Step 3: Cross multiply
    140,510.31x = 210,791.43 × 44,471.70
  4. Step 4: Simplify right side
    140,510.31x = 9,374,253,237.53
  5. Step 5: Solve for x
    x = 9,374,253,237.53/140,510.31
  6. Step 6: Final answer
    x = 66,715.77

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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.