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Finding the Fourth Proportional to 70,956,657.70, 106,434,986.55 and 41,780,546.80

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Solution

The fourth proportional to 70,956,657.70, 106,434,986.55 and 41,780,546.80 is: 62,670,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956,657.70 : 106,434,986.55 = 41,780,546.80 : x
  2. Step 2: Convert to fraction form
    70,956,657.70/106,434,986.55 = 41,780,546.80/x
  3. Step 3: Cross multiply
    70,956,657.70x = 106,434,986.55 × 41,780,546.80
  4. Step 4: Simplify right side
    70,956,657.70x = 4,446,911,936,709,645
  5. Step 5: Solve for x
    x = 4,446,911,936,709,645/70,956,657.70
  6. Step 6: Final answer
    x = 62,670,820.20

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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.