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Finding the Fourth Proportional to 57,991.95, 86,855.90 and 34,569.99

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Solution

The fourth proportional to 57,991.95, 86,855.90 and 34,569.99 is: 51,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,991.95 : 86,855.90 = 34,569.99 : x
  2. Step 2: Convert to fraction form
    57,991.95/86,855.90 = 34,569.99/x
  3. Step 3: Cross multiply
    57,991.95x = 86,855.90 × 34,569.99
  4. Step 4: Simplify right side
    57,991.95x = 3,002,607,421.59
  5. Step 5: Solve for x
    x = 3,002,607,421.59/57,991.95
  6. Step 6: Final answer
    x = 51,776.28

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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.