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Finding the Fourth Proportional to 1,983,644.94, 2,975,664.57 and 786,393.66

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Solution

The fourth proportional to 1,983,644.94, 2,975,664.57 and 786,393.66 is: 1,179,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,644.94 : 2,975,664.57 = 786,393.66 : x
  2. Step 2: Convert to fraction form
    1,983,644.94/2,975,664.57 = 786,393.66/x
  3. Step 3: Cross multiply
    1,983,644.94x = 2,975,664.57 × 786,393.66
  4. Step 4: Simplify right side
    1,983,644.94x = 2,340,043,752,134.63
  5. Step 5: Solve for x
    x = 2,340,043,752,134.63/1,983,644.94
  6. Step 6: Final answer
    x = 1,179,668.65

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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.