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Finding the Fourth Proportional to 16,977,892.20, 25,466,838.30 and 5,616,864.60

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Solution

The fourth proportional to 16,977,892.20, 25,466,838.30 and 5,616,864.60 is: 8,425,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,977,892.20 : 25,466,838.30 = 5,616,864.60 : x
  2. Step 2: Convert to fraction form
    16,977,892.20/25,466,838.30 = 5,616,864.60/x
  3. Step 3: Cross multiply
    16,977,892.20x = 25,466,838.30 × 5,616,864.60
  4. Step 4: Simplify right side
    16,977,892.20x = 143,043,782,521,194.19
  5. Step 5: Solve for x
    x = 143,043,782,521,194.19/16,977,892.20
  6. Step 6: Final answer
    x = 8,425,296.90

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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.