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Finding the Fourth Proportional to 11,764.40, 17,646.60 and 9,863.60

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Solution

The fourth proportional to 11,764.40, 17,646.60 and 9,863.60 is: 14,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,764.40 : 17,646.60 = 9,863.60 : x
  2. Step 2: Convert to fraction form
    11,764.40/17,646.60 = 9,863.60/x
  3. Step 3: Cross multiply
    11,764.40x = 17,646.60 × 9,863.60
  4. Step 4: Simplify right side
    11,764.40x = 174,059,003.76
  5. Step 5: Solve for x
    x = 174,059,003.76/11,764.40
  6. Step 6: Final answer
    x = 14,795.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.