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Finding the Fourth Proportional to 3,985,653,003.60, 5,978,479,505.40 and 3,695,415,358.80

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Solution

The fourth proportional to 3,985,653,003.60, 5,978,479,505.40 and 3,695,415,358.80 is: 5,543,123,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,653,003.60 : 5,978,479,505.40 = 3,695,415,358.80 : x
  2. Step 2: Convert to fraction form
    3,985,653,003.60/5,978,479,505.40 = 3,695,415,358.80/x
  3. Step 3: Cross multiply
    3,985,653,003.60x = 5,978,479,505.40 × 3,695,415,358.80
  4. Step 4: Simplify right side
    3,985,653,003.60x = 22,092,964,986,526,187,520
  5. Step 5: Solve for x
    x = 22,092,964,986,526,187,520/3,985,653,003.60
  6. Step 6: Final answer
    x = 5,543,123,038.20

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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.