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Finding the Fourth Proportional to 7,943.01, 10,961.17 and 4,917.32

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Solution

The fourth proportional to 7,943.01, 10,961.17 and 4,917.32 is: 6,785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.01 : 10,961.17 = 4,917.32 : x
  2. Step 2: Convert to fraction form
    7,943.01/10,961.17 = 4,917.32/x
  3. Step 3: Cross multiply
    7,943.01x = 10,961.17 × 4,917.32
  4. Step 4: Simplify right side
    7,943.01x = 53,899,643.79
  5. Step 5: Solve for x
    x = 53,899,643.79/7,943.01
  6. Step 6: Final answer
    x = 6,785.79

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1.5x scale

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.