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Finding the Fourth Proportional to 74,452.67, 102,744.54 and 42,187.22

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Solution

The fourth proportional to 74,452.67, 102,744.54 and 42,187.22 is: 58,218.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,452.67 : 102,744.54 = 42,187.22 : x
  2. Step 2: Convert to fraction form
    74,452.67/102,744.54 = 42,187.22/x
  3. Step 3: Cross multiply
    74,452.67x = 102,744.54 × 42,187.22
  4. Step 4: Simplify right side
    74,452.67x = 4,334,505,999.06
  5. Step 5: Solve for x
    x = 4,334,505,999.06/74,452.67
  6. Step 6: Final answer
    x = 58,218.28

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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.