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Finding the Fourth Proportional to 1,996,748.40, 2,993,081.40 and 984,313.20

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Solution

The fourth proportional to 1,996,748.40, 2,993,081.40 and 984,313.20 is: 1,475,463.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996,748.40 : 2,993,081.40 = 984,313.20 : x
  2. Step 2: Convert to fraction form
    1,996,748.40/2,993,081.40 = 984,313.20/x
  3. Step 3: Cross multiply
    1,996,748.40x = 2,993,081.40 × 984,313.20
  4. Step 4: Simplify right side
    1,996,748.40x = 2,946,129,530,694.48
  5. Step 5: Solve for x
    x = 2,946,129,530,694.48/1,996,748.40
  6. Step 6: Final answer
    x = 1,475,463.57

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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.