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Finding the Fourth Proportional to 1,777,169.60, 2,664,976.80 and 711,857.60

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Solution

The fourth proportional to 1,777,169.60, 2,664,976.80 and 711,857.60 is: 1,067,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777,169.60 : 2,664,976.80 = 711,857.60 : x
  2. Step 2: Convert to fraction form
    1,777,169.60/2,664,976.80 = 711,857.60/x
  3. Step 3: Cross multiply
    1,777,169.60x = 2,664,976.80 × 711,857.60
  4. Step 4: Simplify right side
    1,777,169.60x = 1,897,083,988,903.68
  5. Step 5: Solve for x
    x = 1,897,083,988,903.68/1,777,169.60
  6. Step 6: Final answer
    x = 1,067,474.93

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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.