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Finding the Fourth Proportional to 99,856,234.80, 149,784,352.20 and 61,393,028.40

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Solution

The fourth proportional to 99,856,234.80, 149,784,352.20 and 61,393,028.40 is: 92,089,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856,234.80 : 149,784,352.20 = 61,393,028.40 : x
  2. Step 2: Convert to fraction form
    99,856,234.80/149,784,352.20 = 61,393,028.40/x
  3. Step 3: Cross multiply
    99,856,234.80x = 149,784,352.20 × 61,393,028.40
  4. Step 4: Simplify right side
    99,856,234.80x = 9,195,714,988,490,202
  5. Step 5: Solve for x
    x = 9,195,714,988,490,202/99,856,234.80
  6. Step 6: Final answer
    x = 92,089,542.60

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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.