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Finding the Fourth Proportional to 72,136.98, 107,934.83 and 59,662.88

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Solution

The fourth proportional to 72,136.98, 107,934.83 and 59,662.88 is: 89,270.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.98 : 107,934.83 = 59,662.88 : x
  2. Step 2: Convert to fraction form
    72,136.98/107,934.83 = 59,662.88/x
  3. Step 3: Cross multiply
    72,136.98x = 107,934.83 × 59,662.88
  4. Step 4: Simplify right side
    72,136.98x = 6,439,702,600.61
  5. Step 5: Solve for x
    x = 6,439,702,600.61/72,136.98
  6. Step 6: Final answer
    x = 89,270.48

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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.