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Finding the Fourth Proportional to 71,762.58, 98,963.64 and 54,736.56

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Solution

The fourth proportional to 71,762.58, 98,963.64 and 54,736.56 is: 75,484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,762.58 : 98,963.64 = 54,736.56 : x
  2. Step 2: Convert to fraction form
    71,762.58/98,963.64 = 54,736.56/x
  3. Step 3: Cross multiply
    71,762.58x = 98,963.64 × 54,736.56
  4. Step 4: Simplify right side
    71,762.58x = 5,416,929,218.68
  5. Step 5: Solve for x
    x = 5,416,929,218.68/71,762.58
  6. Step 6: Final answer
    x = 75,484.04

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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.