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Finding the Fourth Proportional to 8,694.76, 11,998.78 and 4,715.86

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Solution

The fourth proportional to 8,694.76, 11,998.78 and 4,715.86 is: 6,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.76 : 11,998.78 = 4,715.86 : x
  2. Step 2: Convert to fraction form
    8,694.76/11,998.78 = 4,715.86/x
  3. Step 3: Cross multiply
    8,694.76x = 11,998.78 × 4,715.86
  4. Step 4: Simplify right side
    8,694.76x = 56,584,543.07
  5. Step 5: Solve for x
    x = 56,584,543.07/8,694.76
  6. Step 6: Final answer
    x = 6,507.89

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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.