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Finding the Fourth Proportional to 8,591.64, 11,856.24 and 5,601.76

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Solution

The fourth proportional to 8,591.64, 11,856.24 and 5,601.76 is: 7,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.64 : 11,856.24 = 5,601.76 : x
  2. Step 2: Convert to fraction form
    8,591.64/11,856.24 = 5,601.76/x
  3. Step 3: Cross multiply
    8,591.64x = 11,856.24 × 5,601.76
  4. Step 4: Simplify right side
    8,591.64x = 66,415,810.98
  5. Step 5: Solve for x
    x = 66,415,810.98/8,591.64
  6. Step 6: Final answer
    x = 7,730.28

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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.