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Finding the Fourth Proportional to 52,788.72, 79,190.40 and 17,738.40

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Solution

The fourth proportional to 52,788.72, 79,190.40 and 17,738.40 is: 26,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,788.72 : 79,190.40 = 17,738.40 : x
  2. Step 2: Convert to fraction form
    52,788.72/79,190.40 = 17,738.40/x
  3. Step 3: Cross multiply
    52,788.72x = 79,190.40 × 17,738.40
  4. Step 4: Simplify right side
    52,788.72x = 1,404,710,991.36
  5. Step 5: Solve for x
    x = 1,404,710,991.36/52,788.72
  6. Step 6: Final answer
    x = 26,610.06

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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.