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Finding the Fourth Proportional to 99,692,236.60, 149,692,319.70 and 54,342,604.60

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Solution

The fourth proportional to 99,692,236.60, 149,692,319.70 and 54,342,604.60 is: 81,597,833.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,692,236.60 : 149,692,319.70 = 54,342,604.60 : x
  2. Step 2: Convert to fraction form
    99,692,236.60/149,692,319.70 = 54,342,604.60/x
  3. Step 3: Cross multiply
    99,692,236.60x = 149,692,319.70 × 54,342,604.60
  4. Step 4: Simplify right side
    99,692,236.60x = 8,134,670,541,113,890
  5. Step 5: Solve for x
    x = 8,134,670,541,113,890/99,692,236.60
  6. Step 6: Final answer
    x = 81,597,833.68

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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.