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Finding the Fourth Proportional to 70,859,327.60, 106,288,991.40 and 19,749,234.80

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Solution

The fourth proportional to 70,859,327.60, 106,288,991.40 and 19,749,234.80 is: 29,623,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,859,327.60 : 106,288,991.40 = 19,749,234.80 : x
  2. Step 2: Convert to fraction form
    70,859,327.60/106,288,991.40 = 19,749,234.80/x
  3. Step 3: Cross multiply
    70,859,327.60x = 106,288,991.40 × 19,749,234.80
  4. Step 4: Simplify right side
    70,859,327.60x = 2,099,126,247,813,781
  5. Step 5: Solve for x
    x = 2,099,126,247,813,781/70,859,327.60
  6. Step 6: Final answer
    x = 29,623,852.20

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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.