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Finding the Fourth Proportional to 56,986.98, 85,479.81 and 25,388.94

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Solution

The fourth proportional to 56,986.98, 85,479.81 and 25,388.94 is: 38,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,986.98 : 85,479.81 = 25,388.94 : x
  2. Step 2: Convert to fraction form
    56,986.98/85,479.81 = 25,388.94/x
  3. Step 3: Cross multiply
    56,986.98x = 85,479.81 × 25,388.94
  4. Step 4: Simplify right side
    56,986.98x = 2,170,241,992.64
  5. Step 5: Solve for x
    x = 2,170,241,992.64/56,986.98
  6. Step 6: Final answer
    x = 38,083.12

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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.