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Finding the Fourth Proportional to 99,912.40, 149,926.20 and 37,627.60

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Solution

The fourth proportional to 99,912.40, 149,926.20 and 37,627.60 is: 56,463.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.40 : 149,926.20 = 37,627.60 : x
  2. Step 2: Convert to fraction form
    99,912.40/149,926.20 = 37,627.60/x
  3. Step 3: Cross multiply
    99,912.40x = 149,926.20 × 37,627.60
  4. Step 4: Simplify right side
    99,912.40x = 5,641,363,083.12
  5. Step 5: Solve for x
    x = 5,641,363,083.12/99,912.40
  6. Step 6: Final answer
    x = 56,463.09

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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.