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Finding the Fourth Proportional to 83,973,107.20, 125,959,660.80 and 69,624,200.20

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Solution

The fourth proportional to 83,973,107.20, 125,959,660.80 and 69,624,200.20 is: 104,436,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,973,107.20 : 125,959,660.80 = 69,624,200.20 : x
  2. Step 2: Convert to fraction form
    83,973,107.20/125,959,660.80 = 69,624,200.20/x
  3. Step 3: Cross multiply
    83,973,107.20x = 125,959,660.80 × 69,624,200.20
  4. Step 4: Simplify right side
    83,973,107.20x = 8,769,840,640,663,292
  5. Step 5: Solve for x
    x = 8,769,840,640,663,292/83,973,107.20
  6. Step 6: Final answer
    x = 104,436,300.30

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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.