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Finding the Fourth Proportional to 220,157,999.40, 330,236,999.10 and 118,121,327.40

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Solution

The fourth proportional to 220,157,999.40, 330,236,999.10 and 118,121,327.40 is: 177,181,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,157,999.40 : 330,236,999.10 = 118,121,327.40 : x
  2. Step 2: Convert to fraction form
    220,157,999.40/330,236,999.10 = 118,121,327.40/x
  3. Step 3: Cross multiply
    220,157,999.40x = 330,236,999.10 × 118,121,327.40
  4. Step 4: Simplify right side
    220,157,999.40x = 39,008,032,690,284,608
  5. Step 5: Solve for x
    x = 39,008,032,690,284,608/220,157,999.40
  6. Step 6: Final answer
    x = 177,181,991.10

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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.