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Finding the Fourth Proportional to 55,008.78, 75,912.18 and 29,858.28

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Solution

The fourth proportional to 55,008.78, 75,912.18 and 29,858.28 is: 41,204.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,008.78 : 75,912.18 = 29,858.28 : x
  2. Step 2: Convert to fraction form
    55,008.78/75,912.18 = 29,858.28/x
  3. Step 3: Cross multiply
    55,008.78x = 75,912.18 × 29,858.28
  4. Step 4: Simplify right side
    55,008.78x = 2,266,607,125.85
  5. Step 5: Solve for x
    x = 2,266,607,125.85/55,008.78
  6. Step 6: Final answer
    x = 41,204.46

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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.