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Finding the Fourth Proportional to 99,914,626.94, 137,805,843.56 and 85,999,287.22

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Solution

The fourth proportional to 99,914,626.94, 137,805,843.56 and 85,999,287.22 is: 118,613,307.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,914,626.94 : 137,805,843.56 = 85,999,287.22 : x
  2. Step 2: Convert to fraction form
    99,914,626.94/137,805,843.56 = 85,999,287.22/x
  3. Step 3: Cross multiply
    99,914,626.94x = 137,805,843.56 × 85,999,287.22
  4. Step 4: Simplify right side
    99,914,626.94x = 11,851,204,320,910,828
  5. Step 5: Solve for x
    x = 11,851,204,320,910,828/99,914,626.94
  6. Step 6: Final answer
    x = 118,613,307.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.