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Finding the Fourth Proportional to 71,644,793.70, 107,467,190.55 and 70,449,051.45

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Solution

The fourth proportional to 71,644,793.70, 107,467,190.55 and 70,449,051.45 is: 105,673,577.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644,793.70 : 107,467,190.55 = 70,449,051.45 : x
  2. Step 2: Convert to fraction form
    71,644,793.70/107,467,190.55 = 70,449,051.45/x
  3. Step 3: Cross multiply
    71,644,793.70x = 107,467,190.55 × 70,449,051.45
  4. Step 4: Simplify right side
    71,644,793.70x = 7,570,961,636,243,904
  5. Step 5: Solve for x
    x = 7,570,961,636,243,904/71,644,793.70
  6. Step 6: Final answer
    x = 105,673,577.18

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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.