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Finding the Fourth Proportional to 34,769,122.90, 47,978,989.26 and 19,297,989.66

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Solution

The fourth proportional to 34,769,122.90, 47,978,989.26 and 19,297,989.66 is: 26,629,893.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,769,122.90 : 47,978,989.26 = 19,297,989.66 : x
  2. Step 2: Convert to fraction form
    34,769,122.90/47,978,989.26 = 19,297,989.66/x
  3. Step 3: Cross multiply
    34,769,122.90x = 47,978,989.26 × 19,297,989.66
  4. Step 4: Simplify right side
    34,769,122.90x = 925,898,038,456,809.75
  5. Step 5: Solve for x
    x = 925,898,038,456,809.75/34,769,122.90
  6. Step 6: Final answer
    x = 26,629,893.46

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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.