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Finding the Fourth Proportional to 99,247.56, 148,893.21 and 54,938.94

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Solution

The fourth proportional to 99,247.56, 148,893.21 and 54,938.94 is: 82,420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,247.56 : 148,893.21 = 54,938.94 : x
  2. Step 2: Convert to fraction form
    99,247.56/148,893.21 = 54,938.94/x
  3. Step 3: Cross multiply
    99,247.56x = 148,893.21 × 54,938.94
  4. Step 4: Simplify right side
    99,247.56x = 8,180,035,130.60
  5. Step 5: Solve for x
    x = 8,180,035,130.60/99,247.56
  6. Step 6: Final answer
    x = 82,420.52

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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.