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Finding the Fourth Proportional to 2,655,793.80, 3,977,785.80 and 2,054,806.20

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Solution

The fourth proportional to 2,655,793.80, 3,977,785.80 and 2,054,806.20 is: 3,077,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655,793.80 : 3,977,785.80 = 2,054,806.20 : x
  2. Step 2: Convert to fraction form
    2,655,793.80/3,977,785.80 = 2,054,806.20/x
  3. Step 3: Cross multiply
    2,655,793.80x = 3,977,785.80 × 2,054,806.20
  4. Step 4: Simplify right side
    2,655,793.80x = 8,173,578,924,111.96
  5. Step 5: Solve for x
    x = 8,173,578,924,111.96/2,655,793.80
  6. Step 6: Final answer
    x = 3,077,640.64

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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.