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Finding the Fourth Proportional to 10,616.72, 15,925.03 and 2,719.22

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Solution

The fourth proportional to 10,616.72, 15,925.03 and 2,719.22 is: 4,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,616.72 : 15,925.03 = 2,719.22 : x
  2. Step 2: Convert to fraction form
    10,616.72/15,925.03 = 2,719.22/x
  3. Step 3: Cross multiply
    10,616.72x = 15,925.03 × 2,719.22
  4. Step 4: Simplify right side
    10,616.72x = 43,303,660.08
  5. Step 5: Solve for x
    x = 43,303,660.08/10,616.72
  6. Step 6: Final answer
    x = 4,078.82

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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.