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Finding the Fourth Proportional to 55,661.71, 83,475.23 and 18,213.44

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Solution

The fourth proportional to 55,661.71, 83,475.23 and 18,213.44 is: 27,314.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,661.71 : 83,475.23 = 18,213.44 : x
  2. Step 2: Convert to fraction form
    55,661.71/83,475.23 = 18,213.44/x
  3. Step 3: Cross multiply
    55,661.71x = 83,475.23 × 18,213.44
  4. Step 4: Simplify right side
    55,661.71x = 1,520,370,916.53
  5. Step 5: Solve for x
    x = 1,520,370,916.53/55,661.71
  6. Step 6: Final answer
    x = 27,314.48

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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.