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Finding the Fourth Proportional to 57,136.62, 78,822.36 and 36,999.99

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Solution

The fourth proportional to 57,136.62, 78,822.36 and 36,999.99 is: 51,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.62 : 78,822.36 = 36,999.99 : x
  2. Step 2: Convert to fraction form
    57,136.62/78,822.36 = 36,999.99/x
  3. Step 3: Cross multiply
    57,136.62x = 78,822.36 × 36,999.99
  4. Step 4: Simplify right side
    57,136.62x = 2,916,426,557.42
  5. Step 5: Solve for x
    x = 2,916,426,557.42/57,136.62
  6. Step 6: Final answer
    x = 51,043.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.