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Finding the Fourth Proportional to 8,422.88, 11,624.16 and 4,696.88

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Solution

The fourth proportional to 8,422.88, 11,624.16 and 4,696.88 is: 6,482.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.88 : 11,624.16 = 4,696.88 : x
  2. Step 2: Convert to fraction form
    8,422.88/11,624.16 = 4,696.88/x
  3. Step 3: Cross multiply
    8,422.88x = 11,624.16 × 4,696.88
  4. Step 4: Simplify right side
    8,422.88x = 54,597,284.62
  5. Step 5: Solve for x
    x = 54,597,284.62/8,422.88
  6. Step 6: Final answer
    x = 6,482.02

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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.