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Finding the Fourth Proportional to 367,438.40, 551,311.20 and 118,196.80

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Solution

The fourth proportional to 367,438.40, 551,311.20 and 118,196.80 is: 177,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,438.40 : 551,311.20 = 118,196.80 : x
  2. Step 2: Convert to fraction form
    367,438.40/551,311.20 = 118,196.80/x
  3. Step 3: Cross multiply
    367,438.40x = 551,311.20 × 118,196.80
  4. Step 4: Simplify right side
    367,438.40x = 65,163,219,644.16
  5. Step 5: Solve for x
    x = 65,163,219,644.16/367,438.40
  6. Step 6: Final answer
    x = 177,344.61

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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.