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Finding the Fourth Proportional to 57,772.80, 86,651.10 and 18,333.90

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Solution

The fourth proportional to 57,772.80, 86,651.10 and 18,333.90 is: 27,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,772.80 : 86,651.10 = 18,333.90 : x
  2. Step 2: Convert to fraction form
    57,772.80/86,651.10 = 18,333.90/x
  3. Step 3: Cross multiply
    57,772.80x = 86,651.10 × 18,333.90
  4. Step 4: Simplify right side
    57,772.80x = 1,588,652,602.29
  5. Step 5: Solve for x
    x = 1,588,652,602.29/57,772.80
  6. Step 6: Final answer
    x = 27,498.28

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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.