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Finding the Fourth Proportional to 4,796,978.11, 7,193,418.91 and 2,776,616.57

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Solution

The fourth proportional to 4,796,978.11, 7,193,418.91 and 2,776,616.57 is: 4,163,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,796,978.11 : 7,193,418.91 = 2,776,616.57 : x
  2. Step 2: Convert to fraction form
    4,796,978.11/7,193,418.91 = 2,776,616.57/x
  3. Step 3: Cross multiply
    4,796,978.11x = 7,193,418.91 × 2,776,616.57
  4. Step 4: Simplify right side
    4,796,978.11x = 19,973,366,140,457.34
  5. Step 5: Solve for x
    x = 19,973,366,140,457.34/4,796,978.11
  6. Step 6: Final answer
    x = 4,163,739.27

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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.