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Finding the Fourth Proportional to 22,009,861.20, 33,014,791.80 and 20,516,869.20

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Solution

The fourth proportional to 22,009,861.20, 33,014,791.80 and 20,516,869.20 is: 30,775,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009,861.20 : 33,014,791.80 = 20,516,869.20 : x
  2. Step 2: Convert to fraction form
    22,009,861.20/33,014,791.80 = 20,516,869.20/x
  3. Step 3: Cross multiply
    22,009,861.20x = 33,014,791.80 × 20,516,869.20
  4. Step 4: Simplify right side
    22,009,861.20x = 677,360,165,025,832.50
  5. Step 5: Solve for x
    x = 677,360,165,025,832.50/22,009,861.20
  6. Step 6: Final answer
    x = 30,775,303.80

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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.