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Finding the Fourth Proportional to 67,388.98, 92,978.12 and 43,516.66

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Solution

The fourth proportional to 67,388.98, 92,978.12 and 43,516.66 is: 60,040.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,388.98 : 92,978.12 = 43,516.66 : x
  2. Step 2: Convert to fraction form
    67,388.98/92,978.12 = 43,516.66/x
  3. Step 3: Cross multiply
    67,388.98x = 92,978.12 × 43,516.66
  4. Step 4: Simplify right side
    67,388.98x = 4,046,097,235.48
  5. Step 5: Solve for x
    x = 4,046,097,235.48/67,388.98
  6. Step 6: Final answer
    x = 60,040.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.