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Finding the Fourth Proportional to 56,992.88, 85,100.14 and 51,031.28

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Solution

The fourth proportional to 56,992.88, 85,100.14 and 51,031.28 is: 76,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,992.88 : 85,100.14 = 51,031.28 : x
  2. Step 2: Convert to fraction form
    56,992.88/85,100.14 = 51,031.28/x
  3. Step 3: Cross multiply
    56,992.88x = 85,100.14 × 51,031.28
  4. Step 4: Simplify right side
    56,992.88x = 4,342,769,072.38
  5. Step 5: Solve for x
    x = 4,342,769,072.38/56,992.88
  6. Step 6: Final answer
    x = 76,198.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.