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Finding the Fourth Proportional to 61,447.80, 92,171.70 and 54,230.70

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Solution

The fourth proportional to 61,447.80, 92,171.70 and 54,230.70 is: 81,346.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,447.80 : 92,171.70 = 54,230.70 : x
  2. Step 2: Convert to fraction form
    61,447.80/92,171.70 = 54,230.70/x
  3. Step 3: Cross multiply
    61,447.80x = 92,171.70 × 54,230.70
  4. Step 4: Simplify right side
    61,447.80x = 4,998,535,811.19
  5. Step 5: Solve for x
    x = 4,998,535,811.19/61,447.80
  6. Step 6: Final answer
    x = 81,346.05

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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.