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Finding the Fourth Proportional to 1,986,003.81, 2,740,776.28 and 1,102,957.01

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Solution

The fourth proportional to 1,986,003.81, 2,740,776.28 and 1,102,957.01 is: 1,522,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,003.81 : 2,740,776.28 = 1,102,957.01 : x
  2. Step 2: Convert to fraction form
    1,986,003.81/2,740,776.28 = 1,102,957.01/x
  3. Step 3: Cross multiply
    1,986,003.81x = 2,740,776.28 × 1,102,957.01
  4. Step 4: Simplify right side
    1,986,003.81x = 3,022,958,397,163.84
  5. Step 5: Solve for x
    x = 3,022,958,397,163.84/1,986,003.81
  6. Step 6: Final answer
    x = 1,522,131.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.