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Finding the Fourth Proportional to 74,019.25, 111,027.84 and 17,858.89

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Solution

The fourth proportional to 74,019.25, 111,027.84 and 17,858.89 is: 26,788.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,019.25 : 111,027.84 = 17,858.89 : x
  2. Step 2: Convert to fraction form
    74,019.25/111,027.84 = 17,858.89/x
  3. Step 3: Cross multiply
    74,019.25x = 111,027.84 × 17,858.89
  4. Step 4: Simplify right side
    74,019.25x = 1,982,833,426.36
  5. Step 5: Solve for x
    x = 1,982,833,426.36/74,019.25
  6. Step 6: Final answer
    x = 26,788.08

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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.