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Finding the Fourth Proportional to 86,136.01, 129,072.43 and 36,188.80

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Solution

The fourth proportional to 86,136.01, 129,072.43 and 36,188.80 is: 54,227.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,136.01 : 129,072.43 = 36,188.80 : x
  2. Step 2: Convert to fraction form
    86,136.01/129,072.43 = 36,188.80/x
  3. Step 3: Cross multiply
    86,136.01x = 129,072.43 × 36,188.80
  4. Step 4: Simplify right side
    86,136.01x = 4,670,976,077.34
  5. Step 5: Solve for x
    x = 4,670,976,077.34/86,136.01
  6. Step 6: Final answer
    x = 54,227.91

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1.5x scale

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.