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Finding the Fourth Proportional to 8,673.72, 11,969.68 and 4,694.76

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Solution

The fourth proportional to 8,673.72, 11,969.68 and 4,694.76 is: 6,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.72 : 11,969.68 = 4,694.76 : x
  2. Step 2: Convert to fraction form
    8,673.72/11,969.68 = 4,694.76/x
  3. Step 3: Cross multiply
    8,673.72x = 11,969.68 × 4,694.76
  4. Step 4: Simplify right side
    8,673.72x = 56,194,774.88
  5. Step 5: Solve for x
    x = 56,194,774.88/8,673.72
  6. Step 6: Final answer
    x = 6,478.74

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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.