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Finding the Fourth Proportional to 101,959,889.88, 152,939,984.94 and 77,835,791.64

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Solution

The fourth proportional to 101,959,889.88, 152,939,984.94 and 77,835,791.64 is: 116,753,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,959,889.88 : 152,939,984.94 = 77,835,791.64 : x
  2. Step 2: Convert to fraction form
    101,959,889.88/152,939,984.94 = 77,835,791.64/x
  3. Step 3: Cross multiply
    101,959,889.88x = 152,939,984.94 × 77,835,791.64
  4. Step 4: Simplify right side
    101,959,889.88x = 11,904,204,801,214,578
  5. Step 5: Solve for x
    x = 11,904,204,801,214,578/101,959,889.88
  6. Step 6: Final answer
    x = 116,753,802.06

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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.