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Finding the Fourth Proportional to 54,873.52, 82,309.68 and 13,320.52

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Solution

The fourth proportional to 54,873.52, 82,309.68 and 13,320.52 is: 19,980.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,873.52 : 82,309.68 = 13,320.52 : x
  2. Step 2: Convert to fraction form
    54,873.52/82,309.68 = 13,320.52/x
  3. Step 3: Cross multiply
    54,873.52x = 82,309.68 × 13,320.52
  4. Step 4: Simplify right side
    54,873.52x = 1,096,407,738.63
  5. Step 5: Solve for x
    x = 1,096,407,738.63/54,873.52
  6. Step 6: Final answer
    x = 19,980.63

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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.