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Finding the Fourth Proportional to 7,886,750.40, 11,834,791.20 and 5,751,460.80

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Solution

The fourth proportional to 7,886,750.40, 11,834,791.20 and 5,751,460.80 is: 8,630,593.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886,750.40 : 11,834,791.20 = 5,751,460.80 : x
  2. Step 2: Convert to fraction form
    7,886,750.40/11,834,791.20 = 5,751,460.80/x
  3. Step 3: Cross multiply
    7,886,750.40x = 11,834,791.20 × 5,751,460.80
  4. Step 4: Simplify right side
    7,886,750.40x = 68,067,337,662,984.95
  5. Step 5: Solve for x
    x = 68,067,337,662,984.95/7,886,750.40
  6. Step 6: Final answer
    x = 8,630,593.62

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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.