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Finding the Fourth Proportional to 1,986,202.03, 2,978,020.91 and 849,705.61

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Solution

The fourth proportional to 1,986,202.03, 2,978,020.91 and 849,705.61 is: 1,274,009.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,202.03 : 2,978,020.91 = 849,705.61 : x
  2. Step 2: Convert to fraction form
    1,986,202.03/2,978,020.91 = 849,705.61/x
  3. Step 3: Cross multiply
    1,986,202.03x = 2,978,020.91 × 849,705.61
  4. Step 4: Simplify right side
    1,986,202.03x = 2,530,441,056,844.19
  5. Step 5: Solve for x
    x = 2,530,441,056,844.19/1,986,202.03
  6. Step 6: Final answer
    x = 1,274,009.91

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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.