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Finding the Fourth Proportional to 8,446.70, 11,656.77 and 5,609.18

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Solution

The fourth proportional to 8,446.70, 11,656.77 and 5,609.18 is: 7,740.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,446.70 : 11,656.77 = 5,609.18 : x
  2. Step 2: Convert to fraction form
    8,446.70/11,656.77 = 5,609.18/x
  3. Step 3: Cross multiply
    8,446.70x = 11,656.77 × 5,609.18
  4. Step 4: Simplify right side
    8,446.70x = 65,384,935.17
  5. Step 5: Solve for x
    x = 65,384,935.17/8,446.70
  6. Step 6: Final answer
    x = 7,740.89

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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.