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Finding the Fourth Proportional to 7,551,910.80, 11,309,203.80 and 5,013,824.40

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Solution

The fourth proportional to 7,551,910.80, 11,309,203.80 and 5,013,824.40 is: 7,508,346.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,551,910.80 : 11,309,203.80 = 5,013,824.40 : x
  2. Step 2: Convert to fraction form
    7,551,910.80/11,309,203.80 = 5,013,824.40/x
  3. Step 3: Cross multiply
    7,551,910.80x = 11,309,203.80 × 5,013,824.40
  4. Step 4: Simplify right side
    7,551,910.80x = 56,702,361,957,012.73
  5. Step 5: Solve for x
    x = 56,702,361,957,012.73/7,551,910.80
  6. Step 6: Final answer
    x = 7,508,346.36

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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.