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Finding the Fourth Proportional to 1,983,558.90, 2,973,594.11 and 786,322.20

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Solution

The fourth proportional to 1,983,558.90, 2,973,594.11 and 786,322.20 is: 1,178,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,558.90 : 2,973,594.11 = 786,322.20 : x
  2. Step 2: Convert to fraction form
    1,983,558.90/2,973,594.11 = 786,322.20/x
  3. Step 3: Cross multiply
    1,983,558.90x = 2,973,594.11 × 786,322.20
  4. Step 4: Simplify right side
    1,983,558.90x = 2,338,203,058,550.63
  5. Step 5: Solve for x
    x = 2,338,203,058,550.63/1,983,558.90
  6. Step 6: Final answer
    x = 1,178,791.85

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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.