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Finding the Fourth Proportional to 57,347.15, 86,020.72 and 17,907.64

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Solution

The fourth proportional to 57,347.15, 86,020.72 and 17,907.64 is: 26,861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,347.15 : 86,020.72 = 17,907.64 : x
  2. Step 2: Convert to fraction form
    57,347.15/86,020.72 = 17,907.64/x
  3. Step 3: Cross multiply
    57,347.15x = 86,020.72 × 17,907.64
  4. Step 4: Simplify right side
    57,347.15x = 1,540,427,826.48
  5. Step 5: Solve for x
    x = 1,540,427,826.48/57,347.15
  6. Step 6: Final answer
    x = 26,861.46

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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.