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Finding the Fourth Proportional to 9,718.44, 13,410.84 and 5,738.76

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Solution

The fourth proportional to 9,718.44, 13,410.84 and 5,738.76 is: 7,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,718.44 : 13,410.84 = 5,738.76 : x
  2. Step 2: Convert to fraction form
    9,718.44/13,410.84 = 5,738.76/x
  3. Step 3: Cross multiply
    9,718.44x = 13,410.84 × 5,738.76
  4. Step 4: Simplify right side
    9,718.44x = 76,961,592.16
  5. Step 5: Solve for x
    x = 76,961,592.16/9,718.44
  6. Step 6: Final answer
    x = 7,919.13

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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.