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Finding the Fourth Proportional to 1,738,241.40, 2,604,251.70 and 1,420,980.60

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Solution

The fourth proportional to 1,738,241.40, 2,604,251.70 and 1,420,980.60 is: 2,128,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738,241.40 : 2,604,251.70 = 1,420,980.60 : x
  2. Step 2: Convert to fraction form
    1,738,241.40/2,604,251.70 = 1,420,980.60/x
  3. Step 3: Cross multiply
    1,738,241.40x = 2,604,251.70 × 1,420,980.60
  4. Step 4: Simplify right side
    1,738,241.40x = 3,700,591,143,217.02
  5. Step 5: Solve for x
    x = 3,700,591,143,217.02/1,738,241.40
  6. Step 6: Final answer
    x = 2,128,928.20

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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.