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Finding the Fourth Proportional to 85,361.73, 128,056.40 and 32,057.85

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Solution

The fourth proportional to 85,361.73, 128,056.40 and 32,057.85 is: 48,091.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,361.73 : 128,056.40 = 32,057.85 : x
  2. Step 2: Convert to fraction form
    85,361.73/128,056.40 = 32,057.85/x
  3. Step 3: Cross multiply
    85,361.73x = 128,056.40 × 32,057.85
  4. Step 4: Simplify right side
    85,361.73x = 4,105,212,862.74
  5. Step 5: Solve for x
    x = 4,105,212,862.74/85,361.73
  6. Step 6: Final answer
    x = 48,091.96

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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.