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Finding the Fourth Proportional to 207,337.40, 311,006.10 and 67,196.60

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Solution

The fourth proportional to 207,337.40, 311,006.10 and 67,196.60 is: 100,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,337.40 : 311,006.10 = 67,196.60 : x
  2. Step 2: Convert to fraction form
    207,337.40/311,006.10 = 67,196.60/x
  3. Step 3: Cross multiply
    207,337.40x = 311,006.10 × 67,196.60
  4. Step 4: Simplify right side
    207,337.40x = 20,898,552,499.26
  5. Step 5: Solve for x
    x = 20,898,552,499.26/207,337.40
  6. Step 6: Final answer
    x = 100,794.90

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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.