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Finding the Fourth Proportional to 66,096.44, 99,123.64 and 21,712.90

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Solution

The fourth proportional to 66,096.44, 99,123.64 and 21,712.90 is: 32,562.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,096.44 : 99,123.64 = 21,712.90 : x
  2. Step 2: Convert to fraction form
    66,096.44/99,123.64 = 21,712.90/x
  3. Step 3: Cross multiply
    66,096.44x = 99,123.64 × 21,712.90
  4. Step 4: Simplify right side
    66,096.44x = 2,152,261,682.96
  5. Step 5: Solve for x
    x = 2,152,261,682.96/66,096.44
  6. Step 6: Final answer
    x = 32,562.44

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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.