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Finding the Fourth Proportional to 2,407.48, 3,611.21 and 764.15

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Solution

The fourth proportional to 2,407.48, 3,611.21 and 764.15 is: 1,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.48 : 3,611.21 = 764.15 : x
  2. Step 2: Convert to fraction form
    2,407.48/3,611.21 = 764.15/x
  3. Step 3: Cross multiply
    2,407.48x = 3,611.21 × 764.15
  4. Step 4: Simplify right side
    2,407.48x = 2,759,512.76
  5. Step 5: Solve for x
    x = 2,759,512.76/2,407.48
  6. Step 6: Final answer
    x = 1,146.22

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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.