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Finding the Fourth Proportional to 2,019,978.20, 3,031,619.70 and 2,004,231.80

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Solution

The fourth proportional to 2,019,978.20, 3,031,619.70 and 2,004,231.80 is: 3,007,987.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019,978.20 : 3,031,619.70 = 2,004,231.80 : x
  2. Step 2: Convert to fraction form
    2,019,978.20/3,031,619.70 = 2,004,231.80/x
  3. Step 3: Cross multiply
    2,019,978.20x = 3,031,619.70 × 2,004,231.80
  4. Step 4: Simplify right side
    2,019,978.20x = 6,076,068,608,246.46
  5. Step 5: Solve for x
    x = 6,076,068,608,246.46/2,019,978.20
  6. Step 6: Final answer
    x = 3,007,987.22

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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.