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Finding the Fourth Proportional to 3,985,655,997.60, 5,978,483,996.40 and 3,695,418,352.80

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Solution

The fourth proportional to 3,985,655,997.60, 5,978,483,996.40 and 3,695,418,352.80 is: 5,543,127,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,655,997.60 : 5,978,483,996.40 = 3,695,418,352.80 : x
  2. Step 2: Convert to fraction form
    3,985,655,997.60/5,978,483,996.40 = 3,695,418,352.80/x
  3. Step 3: Cross multiply
    3,985,655,997.60x = 5,978,483,996.40 × 3,695,418,352.80
  4. Step 4: Simplify right side
    3,985,655,997.60x = 22,092,999,482,217,648,128
  5. Step 5: Solve for x
    x = 22,092,999,482,217,648,128/3,985,655,997.60
  6. Step 6: Final answer
    x = 5,543,127,529.20

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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.