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Finding the Fourth Proportional to 1,989,365.06, 2,984,629.82 and 641,500.56

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Solution

The fourth proportional to 1,989,365.06, 2,984,629.82 and 641,500.56 is: 962,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,365.06 : 2,984,629.82 = 641,500.56 : x
  2. Step 2: Convert to fraction form
    1,989,365.06/2,984,629.82 = 641,500.56/x
  3. Step 3: Cross multiply
    1,989,365.06x = 2,984,629.82 × 641,500.56
  4. Step 4: Simplify right side
    1,989,365.06x = 1,914,641,697,715.20
  5. Step 5: Solve for x
    x = 1,914,641,697,715.20/1,989,365.06
  6. Step 6: Final answer
    x = 962,438.59

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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.