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Finding the Fourth Proportional to 737,999.40, 1,106,999.10 and 667,140.60

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Solution

The fourth proportional to 737,999.40, 1,106,999.10 and 667,140.60 is: 1,000,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,999.40 : 1,106,999.10 = 667,140.60 : x
  2. Step 2: Convert to fraction form
    737,999.40/1,106,999.10 = 667,140.60/x
  3. Step 3: Cross multiply
    737,999.40x = 1,106,999.10 × 667,140.60
  4. Step 4: Simplify right side
    737,999.40x = 738,524,043,773.46
  5. Step 5: Solve for x
    x = 738,524,043,773.46/737,999.40
  6. Step 6: Final answer
    x = 1,000,710.90

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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.