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Finding the Fourth Proportional to 113,172.82, 156,190.36 and 62,871.82

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Solution

The fourth proportional to 113,172.82, 156,190.36 and 62,871.82 is: 86,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,172.82 : 156,190.36 = 62,871.82 : x
  2. Step 2: Convert to fraction form
    113,172.82/156,190.36 = 62,871.82/x
  3. Step 3: Cross multiply
    113,172.82x = 156,190.36 × 62,871.82
  4. Step 4: Simplify right side
    113,172.82x = 9,819,972,199.66
  5. Step 5: Solve for x
    x = 9,819,972,199.66/113,172.82
  6. Step 6: Final answer
    x = 86,769.70

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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.