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Finding the Fourth Proportional to 9,247, 12,760.91 and 5,055.25

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Solution

The fourth proportional to 9,247, 12,760.91 and 5,055.25 is: 6,976.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,247 : 12,760.91 = 5,055.25 : x
  2. Step 2: Convert to fraction form
    9,247/12,760.91 = 5,055.25/x
  3. Step 3: Cross multiply
    9,247x = 12,760.91 × 5,055.25
  4. Step 4: Simplify right side
    9,247x = 64,509,565.00
  5. Step 5: Solve for x
    x = 64,509,565.00/9,247
  6. Step 6: Final answer
    x = 6,976.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.