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Finding the Fourth Proportional to 55,728.20, 83,592 and 13,608.51

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Solution

The fourth proportional to 55,728.20, 83,592 and 13,608.51 is: 20,412.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,728.20 : 83,592 = 13,608.51 : x
  2. Step 2: Convert to fraction form
    55,728.20/83,592 = 13,608.51/x
  3. Step 3: Cross multiply
    55,728.20x = 83,592 × 13,608.51
  4. Step 4: Simplify right side
    55,728.20x = 1,137,562,567.92
  5. Step 5: Solve for x
    x = 1,137,562,567.92/55,728.20
  6. Step 6: Final answer
    x = 20,412.69

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