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Finding the Fourth Proportional to 73,993,689.60, 110,990,534.40 and 70,970,380.80

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Solution

The fourth proportional to 73,993,689.60, 110,990,534.40 and 70,970,380.80 is: 106,455,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,993,689.60 : 110,990,534.40 = 70,970,380.80 : x
  2. Step 2: Convert to fraction form
    73,993,689.60/110,990,534.40 = 70,970,380.80/x
  3. Step 3: Cross multiply
    73,993,689.60x = 110,990,534.40 × 70,970,380.80
  4. Step 4: Simplify right side
    73,993,689.60x = 7,877,040,491,563,500
  5. Step 5: Solve for x
    x = 7,877,040,491,563,500/73,993,689.60
  6. Step 6: Final answer
    x = 106,455,571.20

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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.