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Finding the Fourth Proportional to 61,880.70, 92,711.70 and 57,944.10

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Solution

The fourth proportional to 61,880.70, 92,711.70 and 57,944.10 is: 86,813.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,880.70 : 92,711.70 = 57,944.10 : x
  2. Step 2: Convert to fraction form
    61,880.70/92,711.70 = 57,944.10/x
  3. Step 3: Cross multiply
    61,880.70x = 92,711.70 × 57,944.10
  4. Step 4: Simplify right side
    61,880.70x = 5,372,096,015.97
  5. Step 5: Solve for x
    x = 5,372,096,015.97/61,880.70
  6. Step 6: Final answer
    x = 86,813.76

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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.