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Finding the Fourth Proportional to 2,123,806.60, 2,980,794.20 and 2,123,806.60

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Solution

The fourth proportional to 2,123,806.60, 2,980,794.20 and 2,123,806.60 is: 2,980,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123,806.60 : 2,980,794.20 = 2,123,806.60 : x
  2. Step 2: Convert to fraction form
    2,123,806.60/2,980,794.20 = 2,123,806.60/x
  3. Step 3: Cross multiply
    2,123,806.60x = 2,980,794.20 × 2,123,806.60
  4. Step 4: Simplify right side
    2,123,806.60x = 6,330,630,395,201.72
  5. Step 5: Solve for x
    x = 6,330,630,395,201.72/2,123,806.60
  6. Step 6: Final answer
    x = 2,980,794.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.