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Finding the Fourth Proportional to 123,611.64, 170,576.82 and 69,907.92

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Solution

The fourth proportional to 123,611.64, 170,576.82 and 69,907.92 is: 96,468.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,611.64 : 170,576.82 = 69,907.92 : x
  2. Step 2: Convert to fraction form
    123,611.64/170,576.82 = 69,907.92/x
  3. Step 3: Cross multiply
    123,611.64x = 170,576.82 × 69,907.92
  4. Step 4: Simplify right side
    123,611.64x = 11,924,670,686.41
  5. Step 5: Solve for x
    x = 11,924,670,686.41/123,611.64
  6. Step 6: Final answer
    x = 96,468.83

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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.