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Finding the Fourth Proportional to 109,425.01, 150,997.48 and 61,690.09

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Solution

The fourth proportional to 109,425.01, 150,997.48 and 61,690.09 is: 85,127.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,425.01 : 150,997.48 = 61,690.09 : x
  2. Step 2: Convert to fraction form
    109,425.01/150,997.48 = 61,690.09/x
  3. Step 3: Cross multiply
    109,425.01x = 150,997.48 × 61,690.09
  4. Step 4: Simplify right side
    109,425.01x = 9,315,048,130.97
  5. Step 5: Solve for x
    x = 9,315,048,130.97/109,425.01
  6. Step 6: Final answer
    x = 85,127.23

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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.