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Finding the Fourth Proportional to 56,689.64, 85,047.11 and 17,249.83

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Solution

The fourth proportional to 56,689.64, 85,047.11 and 17,249.83 is: 25,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,689.64 : 85,047.11 = 17,249.83 : x
  2. Step 2: Convert to fraction form
    56,689.64/85,047.11 = 17,249.83/x
  3. Step 3: Cross multiply
    56,689.64x = 85,047.11 × 17,249.83
  4. Step 4: Simplify right side
    56,689.64x = 1,467,048,530.73
  5. Step 5: Solve for x
    x = 1,467,048,530.73/56,689.64
  6. Step 6: Final answer
    x = 25,878.60

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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.