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Finding the Fourth Proportional to 74,361.76, 111,534.48 and 21,771.76

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Solution

The fourth proportional to 74,361.76, 111,534.48 and 21,771.76 is: 32,655.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,361.76 : 111,534.48 = 21,771.76 : x
  2. Step 2: Convert to fraction form
    74,361.76/111,534.48 = 21,771.76/x
  3. Step 3: Cross multiply
    74,361.76x = 111,534.48 × 21,771.76
  4. Step 4: Simplify right side
    74,361.76x = 2,428,301,930.28
  5. Step 5: Solve for x
    x = 2,428,301,930.28/74,361.76
  6. Step 6: Final answer
    x = 32,655.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.