Home / 18,682,891.20-28,024,336.80-5,219,697.60

Finding the Fourth Proportional to 18,682,891.20, 28,024,336.80 and 5,219,697.60

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Solution

The fourth proportional to 18,682,891.20, 28,024,336.80 and 5,219,697.60 is: 7,829,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682,891.20 : 28,024,336.80 = 5,219,697.60 : x
  2. Step 2: Convert to fraction form
    18,682,891.20/28,024,336.80 = 5,219,697.60/x
  3. Step 3: Cross multiply
    18,682,891.20x = 28,024,336.80 × 5,219,697.60
  4. Step 4: Simplify right side
    18,682,891.20x = 146,278,563,536,551.69
  5. Step 5: Solve for x
    x = 146,278,563,536,551.69/18,682,891.20
  6. Step 6: Final answer
    x = 7,829,546.40

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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.