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Finding the Fourth Proportional to 56,644.90, 84,964.65 and 19,201.30

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Solution

The fourth proportional to 56,644.90, 84,964.65 and 19,201.30 is: 28,801.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,644.90 : 84,964.65 = 19,201.30 : x
  2. Step 2: Convert to fraction form
    56,644.90/84,964.65 = 19,201.30/x
  3. Step 3: Cross multiply
    56,644.90x = 84,964.65 × 19,201.30
  4. Step 4: Simplify right side
    56,644.90x = 1,631,431,734.05
  5. Step 5: Solve for x
    x = 1,631,431,734.05/56,644.90
  6. Step 6: Final answer
    x = 28,801.03

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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.