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Finding the Fourth Proportional to 37,489.50, 51,736.05 and 20,722.50

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Solution

The fourth proportional to 37,489.50, 51,736.05 and 20,722.50 is: 28,597.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,489.50 : 51,736.05 = 20,722.50 : x
  2. Step 2: Convert to fraction form
    37,489.50/51,736.05 = 20,722.50/x
  3. Step 3: Cross multiply
    37,489.50x = 51,736.05 × 20,722.50
  4. Step 4: Simplify right side
    37,489.50x = 1,072,100,296.13
  5. Step 5: Solve for x
    x = 1,072,100,296.13/37,489.50
  6. Step 6: Final answer
    x = 28,597.35

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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.