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Finding the Fourth Proportional to 22,308.48, 30,786.48 and 12,749.76

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Solution

The fourth proportional to 22,308.48, 30,786.48 and 12,749.76 is: 17,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,308.48 : 30,786.48 = 12,749.76 : x
  2. Step 2: Convert to fraction form
    22,308.48/30,786.48 = 12,749.76/x
  3. Step 3: Cross multiply
    22,308.48x = 30,786.48 × 12,749.76
  4. Step 4: Simplify right side
    22,308.48x = 392,520,231.24
  5. Step 5: Solve for x
    x = 392,520,231.24/22,308.48
  6. Step 6: Final answer
    x = 17,595.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.