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Finding the Fourth Proportional to 59,966.67, 90,057.21 and 57,555.87

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Solution

The fourth proportional to 59,966.67, 90,057.21 and 57,555.87 is: 86,436.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,966.67 : 90,057.21 = 57,555.87 : x
  2. Step 2: Convert to fraction form
    59,966.67/90,057.21 = 57,555.87/x
  3. Step 3: Cross multiply
    59,966.67x = 90,057.21 × 57,555.87
  4. Step 4: Simplify right side
    59,966.67x = 5,183,321,409.04
  5. Step 5: Solve for x
    x = 5,183,321,409.04/59,966.67
  6. Step 6: Final answer
    x = 86,436.71

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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.