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Finding the Fourth Proportional to 76,704.52, 115,075.96 and 60,968.92

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Solution

The fourth proportional to 76,704.52, 115,075.96 and 60,968.92 is: 91,468.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,704.52 : 115,075.96 = 60,968.92 : x
  2. Step 2: Convert to fraction form
    76,704.52/115,075.96 = 60,968.92/x
  3. Step 3: Cross multiply
    76,704.52x = 115,075.96 × 60,968.92
  4. Step 4: Simplify right side
    76,704.52x = 7,016,056,999.16
  5. Step 5: Solve for x
    x = 7,016,056,999.16/76,704.52
  6. Step 6: Final answer
    x = 91,468.63

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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.