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Finding the Fourth Proportional to 69,953,503.80, 104,930,255.70 and 57,188,422.20

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Solution

The fourth proportional to 69,953,503.80, 104,930,255.70 and 57,188,422.20 is: 85,782,633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,953,503.80 : 104,930,255.70 = 57,188,422.20 : x
  2. Step 2: Convert to fraction form
    69,953,503.80/104,930,255.70 = 57,188,422.20/x
  3. Step 3: Cross multiply
    69,953,503.80x = 104,930,255.70 × 57,188,422.20
  4. Step 4: Simplify right side
    69,953,503.80x = 6,000,795,764,525,557
  5. Step 5: Solve for x
    x = 6,000,795,764,525,557/69,953,503.80
  6. Step 6: Final answer
    x = 85,782,633.30

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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.