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Finding the Fourth Proportional to 7,917.13, 11,862.06 and 5,247.06

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Solution

The fourth proportional to 7,917.13, 11,862.06 and 5,247.06 is: 7,861.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.13 : 11,862.06 = 5,247.06 : x
  2. Step 2: Convert to fraction form
    7,917.13/11,862.06 = 5,247.06/x
  3. Step 3: Cross multiply
    7,917.13x = 11,862.06 × 5,247.06
  4. Step 4: Simplify right side
    7,917.13x = 62,240,940.54
  5. Step 5: Solve for x
    x = 62,240,940.54/7,917.13
  6. Step 6: Final answer
    x = 7,861.55

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1.5x scale

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.