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Finding the Fourth Proportional to 74,930.03, 111,848.43 and 65,471.42

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Solution

The fourth proportional to 74,930.03, 111,848.43 and 65,471.42 is: 97,729.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,930.03 : 111,848.43 = 65,471.42 : x
  2. Step 2: Convert to fraction form
    74,930.03/111,848.43 = 65,471.42/x
  3. Step 3: Cross multiply
    74,930.03x = 111,848.43 × 65,471.42
  4. Step 4: Simplify right side
    74,930.03x = 7,322,874,977.63
  5. Step 5: Solve for x
    x = 7,322,874,977.63/74,930.03
  6. Step 6: Final answer
    x = 97,729.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.