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Finding the Fourth Proportional to 1,939,782.80, 2,676,796.08 and 1,068,588.92

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Solution

The fourth proportional to 1,939,782.80, 2,676,796.08 and 1,068,588.92 is: 1,474,595.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939,782.80 : 2,676,796.08 = 1,068,588.92 : x
  2. Step 2: Convert to fraction form
    1,939,782.80/2,676,796.08 = 1,068,588.92/x
  3. Step 3: Cross multiply
    1,939,782.80x = 2,676,796.08 × 1,068,588.92
  4. Step 4: Simplify right side
    1,939,782.80x = 2,860,394,632,187.43
  5. Step 5: Solve for x
    x = 2,860,394,632,187.43/1,939,782.80
  6. Step 6: Final answer
    x = 1,474,595.32

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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.