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Finding the Fourth Proportional to 61,905.80, 92,858.70 and 61,322.60

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Solution

The fourth proportional to 61,905.80, 92,858.70 and 61,322.60 is: 91,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,905.80 : 92,858.70 = 61,322.60 : x
  2. Step 2: Convert to fraction form
    61,905.80/92,858.70 = 61,322.60/x
  3. Step 3: Cross multiply
    61,905.80x = 92,858.70 × 61,322.60
  4. Step 4: Simplify right side
    61,905.80x = 5,694,336,916.62
  5. Step 5: Solve for x
    x = 5,694,336,916.62/61,905.80
  6. Step 6: Final answer
    x = 91,983.90

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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.