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Finding the Fourth Proportional to 71,692,917.20, 107,340,310.20 and 69,702,261.20

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Solution

The fourth proportional to 71,692,917.20, 107,340,310.20 and 69,702,261.20 is: 104,359,853.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,692,917.20 : 107,340,310.20 = 69,702,261.20 : x
  2. Step 2: Convert to fraction form
    71,692,917.20/107,340,310.20 = 69,702,261.20/x
  3. Step 3: Cross multiply
    71,692,917.20x = 107,340,310.20 × 69,702,261.20
  4. Step 4: Simplify right side
    71,692,917.20x = 7,481,862,338,849,425
  5. Step 5: Solve for x
    x = 7,481,862,338,849,425/71,692,917.20
  6. Step 6: Final answer
    x = 104,359,853.54

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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.