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Finding the Fourth Proportional to 36,999.45, 55,499.70 and 12,039.63

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Solution

The fourth proportional to 36,999.45, 55,499.70 and 12,039.63 is: 18,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,999.45 : 55,499.70 = 12,039.63 : x
  2. Step 2: Convert to fraction form
    36,999.45/55,499.70 = 12,039.63/x
  3. Step 3: Cross multiply
    36,999.45x = 55,499.70 × 12,039.63
  4. Step 4: Simplify right side
    36,999.45x = 668,195,853.11
  5. Step 5: Solve for x
    x = 668,195,853.11/36,999.45
  6. Step 6: Final answer
    x = 18,059.62

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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.