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Finding the Fourth Proportional to 101,791.84, 152,687.76 and 31,657.18

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Solution

The fourth proportional to 101,791.84, 152,687.76 and 31,657.18 is: 47,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,791.84 : 152,687.76 = 31,657.18 : x
  2. Step 2: Convert to fraction form
    101,791.84/152,687.76 = 31,657.18/x
  3. Step 3: Cross multiply
    101,791.84x = 152,687.76 × 31,657.18
  4. Step 4: Simplify right side
    101,791.84x = 4,833,663,902.12
  5. Step 5: Solve for x
    x = 4,833,663,902.12/101,791.84
  6. Step 6: Final answer
    x = 47,485.77

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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.