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Finding the Fourth Proportional to 20,089.94, 27,723.02 and 11,136.92

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Solution

The fourth proportional to 20,089.94, 27,723.02 and 11,136.92 is: 15,368.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.94 : 27,723.02 = 11,136.92 : x
  2. Step 2: Convert to fraction form
    20,089.94/27,723.02 = 11,136.92/x
  3. Step 3: Cross multiply
    20,089.94x = 27,723.02 × 11,136.92
  4. Step 4: Simplify right side
    20,089.94x = 308,748,861.60
  5. Step 5: Solve for x
    x = 308,748,861.60/20,089.94
  6. Step 6: Final answer
    x = 15,368.34

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1.5x scale

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.