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Finding the Fourth Proportional to 70,682,882.60, 105,962,115.90 and 47,889,871.40

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Solution

The fourth proportional to 70,682,882.60, 105,962,115.90 and 47,889,871.40 is: 71,792,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,682,882.60 : 105,962,115.90 = 47,889,871.40 : x
  2. Step 2: Convert to fraction form
    70,682,882.60/105,962,115.90 = 47,889,871.40/x
  3. Step 3: Cross multiply
    70,682,882.60x = 105,962,115.90 × 47,889,871.40
  4. Step 4: Simplify right side
    70,682,882.60x = 5,074,512,103,722,895
  5. Step 5: Solve for x
    x = 5,074,512,103,722,895/70,682,882.60
  6. Step 6: Final answer
    x = 71,792,659.23

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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.