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Finding the Fourth Proportional to 57,666.40, 86,622.51 and 54,295.69

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Solution

The fourth proportional to 57,666.40, 86,622.51 and 54,295.69 is: 81,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,666.40 : 86,622.51 = 54,295.69 : x
  2. Step 2: Convert to fraction form
    57,666.40/86,622.51 = 54,295.69/x
  3. Step 3: Cross multiply
    57,666.40x = 86,622.51 × 54,295.69
  4. Step 4: Simplify right side
    57,666.40x = 4,703,228,949.98
  5. Step 5: Solve for x
    x = 4,703,228,949.98/57,666.40
  6. Step 6: Final answer
    x = 81,559.26

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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.