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Finding the Fourth Proportional to 62,905.31, 86,792.11 and 43,763.59

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Solution

The fourth proportional to 62,905.31, 86,792.11 and 43,763.59 is: 60,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,905.31 : 86,792.11 = 43,763.59 : x
  2. Step 2: Convert to fraction form
    62,905.31/86,792.11 = 43,763.59/x
  3. Step 3: Cross multiply
    62,905.31x = 86,792.11 × 43,763.59
  4. Step 4: Simplify right side
    62,905.31x = 3,798,334,316.36
  5. Step 5: Solve for x
    x = 3,798,334,316.36/62,905.31
  6. Step 6: Final answer
    x = 60,381.78

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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.