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Finding the Fourth Proportional to 7,616.16, 11,425.59 and 2,688.66

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Solution

The fourth proportional to 7,616.16, 11,425.59 and 2,688.66 is: 4,033.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.16 : 11,425.59 = 2,688.66 : x
  2. Step 2: Convert to fraction form
    7,616.16/11,425.59 = 2,688.66/x
  3. Step 3: Cross multiply
    7,616.16x = 11,425.59 × 2,688.66
  4. Step 4: Simplify right side
    7,616.16x = 30,719,526.81
  5. Step 5: Solve for x
    x = 30,719,526.81/7,616.16
  6. Step 6: Final answer
    x = 4,033.47

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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.