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Finding the Fourth Proportional to 92,552.40, 138,828.60 and 86,331.60

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Solution

The fourth proportional to 92,552.40, 138,828.60 and 86,331.60 is: 129,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,552.40 : 138,828.60 = 86,331.60 : x
  2. Step 2: Convert to fraction form
    92,552.40/138,828.60 = 86,331.60/x
  3. Step 3: Cross multiply
    92,552.40x = 138,828.60 × 86,331.60
  4. Step 4: Simplify right side
    92,552.40x = 11,985,295,163.76
  5. Step 5: Solve for x
    x = 11,985,295,163.76/92,552.40
  6. Step 6: Final answer
    x = 129,497.40

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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.