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Finding the Fourth Proportional to 56,873.61, 85,313.90 and 17,431.11

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Solution

The fourth proportional to 56,873.61, 85,313.90 and 17,431.11 is: 26,147.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,873.61 : 85,313.90 = 17,431.11 : x
  2. Step 2: Convert to fraction form
    56,873.61/85,313.90 = 17,431.11/x
  3. Step 3: Cross multiply
    56,873.61x = 85,313.90 × 17,431.11
  4. Step 4: Simplify right side
    56,873.61x = 1,487,115,888.27
  5. Step 5: Solve for x
    x = 1,487,115,888.27/56,873.61
  6. Step 6: Final answer
    x = 26,147.73

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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.