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Finding the Fourth Proportional to 55,275.48, 82,913.22 and 13,722.48

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Solution

The fourth proportional to 55,275.48, 82,913.22 and 13,722.48 is: 20,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,275.48 : 82,913.22 = 13,722.48 : x
  2. Step 2: Convert to fraction form
    55,275.48/82,913.22 = 13,722.48/x
  3. Step 3: Cross multiply
    55,275.48x = 82,913.22 × 13,722.48
  4. Step 4: Simplify right side
    55,275.48x = 1,137,775,003.19
  5. Step 5: Solve for x
    x = 1,137,775,003.19/55,275.48
  6. Step 6: Final answer
    x = 20,583.72

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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.