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Finding the Fourth Proportional to 123,893.36, 170,997.76 and 73,582.64

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Solution

The fourth proportional to 123,893.36, 170,997.76 and 73,582.64 is: 101,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,893.36 : 170,997.76 = 73,582.64 : x
  2. Step 2: Convert to fraction form
    123,893.36/170,997.76 = 73,582.64/x
  3. Step 3: Cross multiply
    123,893.36x = 170,997.76 × 73,582.64
  4. Step 4: Simplify right side
    123,893.36x = 12,582,466,614.89
  5. Step 5: Solve for x
    x = 12,582,466,614.89/123,893.36
  6. Step 6: Final answer
    x = 101,558.85

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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.