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Finding the Fourth Proportional to 113,790.60, 170,297.10 and 99,793.80

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Solution

The fourth proportional to 113,790.60, 170,297.10 and 99,793.80 is: 149,349.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,790.60 : 170,297.10 = 99,793.80 : x
  2. Step 2: Convert to fraction form
    113,790.60/170,297.10 = 99,793.80/x
  3. Step 3: Cross multiply
    113,790.60x = 170,297.10 × 99,793.80
  4. Step 4: Simplify right side
    113,790.60x = 16,994,594,737.98
  5. Step 5: Solve for x
    x = 16,994,594,737.98/113,790.60
  6. Step 6: Final answer
    x = 149,349.72

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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.