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Finding the Fourth Proportional to 57,989.58, 86,875.26 and 45,471.60

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Solution

The fourth proportional to 57,989.58, 86,875.26 and 45,471.60 is: 68,121.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,989.58 : 86,875.26 = 45,471.60 : x
  2. Step 2: Convert to fraction form
    57,989.58/86,875.26 = 45,471.60/x
  3. Step 3: Cross multiply
    57,989.58x = 86,875.26 × 45,471.60
  4. Step 4: Simplify right side
    57,989.58x = 3,950,357,072.62
  5. Step 5: Solve for x
    x = 3,950,357,072.62/57,989.58
  6. Step 6: Final answer
    x = 68,121.84

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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.