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Finding the Fourth Proportional to 3,480.96, 5,220.96 and 1,172.16

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Solution

The fourth proportional to 3,480.96, 5,220.96 and 1,172.16 is: 1,758.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.96 : 5,220.96 = 1,172.16 : x
  2. Step 2: Convert to fraction form
    3,480.96/5,220.96 = 1,172.16/x
  3. Step 3: Cross multiply
    3,480.96x = 5,220.96 × 1,172.16
  4. Step 4: Simplify right side
    3,480.96x = 6,119,800.47
  5. Step 5: Solve for x
    x = 6,119,800.47/3,480.96
  6. Step 6: Final answer
    x = 1,758.08

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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.