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Finding the Fourth Proportional to 123,896.36, 170,973.24 and 67,307.60

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Solution

The fourth proportional to 123,896.36, 170,973.24 and 67,307.60 is: 92,882.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,896.36 : 170,973.24 = 67,307.60 : x
  2. Step 2: Convert to fraction form
    123,896.36/170,973.24 = 67,307.60/x
  3. Step 3: Cross multiply
    123,896.36x = 170,973.24 × 67,307.60
  4. Step 4: Simplify right side
    123,896.36x = 11,507,798,448.62
  5. Step 5: Solve for x
    x = 11,507,798,448.62/123,896.36
  6. Step 6: Final answer
    x = 92,882.46

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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.