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Finding the Fourth Proportional to 9,199.64, 12,695.26 and 5,007.80

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Solution

The fourth proportional to 9,199.64, 12,695.26 and 5,007.80 is: 6,910.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,199.64 : 12,695.26 = 5,007.80 : x
  2. Step 2: Convert to fraction form
    9,199.64/12,695.26 = 5,007.80/x
  3. Step 3: Cross multiply
    9,199.64x = 12,695.26 × 5,007.80
  4. Step 4: Simplify right side
    9,199.64x = 63,575,323.03
  5. Step 5: Solve for x
    x = 63,575,323.03/9,199.64
  6. Step 6: Final answer
    x = 6,910.63

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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.