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Finding the Fourth Proportional to 3,989,187.06, 5,983,780.73 and 997,371.06

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Solution

The fourth proportional to 3,989,187.06, 5,983,780.73 and 997,371.06 is: 1,496,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,187.06 : 5,983,780.73 = 997,371.06 : x
  2. Step 2: Convert to fraction form
    3,989,187.06/5,983,780.73 = 997,371.06/x
  3. Step 3: Cross multiply
    3,989,187.06x = 5,983,780.73 × 997,371.06
  4. Step 4: Simplify right side
    3,989,187.06x = 5,968,049,729,487.68
  5. Step 5: Solve for x
    x = 5,968,049,729,487.68/3,989,187.06
  6. Step 6: Final answer
    x = 1,496,056.63

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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.