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Finding the Fourth Proportional to 36,896.96, 50,915.99 and 20,981.07

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Solution

The fourth proportional to 36,896.96, 50,915.99 and 20,981.07 is: 28,952.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,896.96 : 50,915.99 = 20,981.07 : x
  2. Step 2: Convert to fraction form
    36,896.96/50,915.99 = 20,981.07/x
  3. Step 3: Cross multiply
    36,896.96x = 50,915.99 × 20,981.07
  4. Step 4: Simplify right side
    36,896.96x = 1,068,272,002.76
  5. Step 5: Solve for x
    x = 1,068,272,002.76/36,896.96
  6. Step 6: Final answer
    x = 28,952.84

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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.