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Finding the Fourth Proportional to 9,608.60, 14,388.60 and 7,664.60

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Solution

The fourth proportional to 9,608.60, 14,388.60 and 7,664.60 is: 11,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,608.60 : 14,388.60 = 7,664.60 : x
  2. Step 2: Convert to fraction form
    9,608.60/14,388.60 = 7,664.60/x
  3. Step 3: Cross multiply
    9,608.60x = 14,388.60 × 7,664.60
  4. Step 4: Simplify right side
    9,608.60x = 110,282,863.56
  5. Step 5: Solve for x
    x = 110,282,863.56/9,608.60
  6. Step 6: Final answer
    x = 11,477.52

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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.