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Finding the Fourth Proportional to 123,964.23, 171,070.88 and 67,375.47

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Solution

The fourth proportional to 123,964.23, 171,070.88 and 67,375.47 is: 92,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,964.23 : 171,070.88 = 67,375.47 : x
  2. Step 2: Convert to fraction form
    123,964.23/171,070.88 = 67,375.47/x
  3. Step 3: Cross multiply
    123,964.23x = 171,070.88 × 67,375.47
  4. Step 4: Simplify right side
    123,964.23x = 11,525,980,606.44
  5. Step 5: Solve for x
    x = 11,525,980,606.44/123,964.23
  6. Step 6: Final answer
    x = 92,978.28

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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.