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Finding the Fourth Proportional to 5,694,978.70, 7,858,965.54 and 3,116,607.76

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Solution

The fourth proportional to 5,694,978.70, 7,858,965.54 and 3,116,607.76 is: 4,300,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,694,978.70 : 7,858,965.54 = 3,116,607.76 : x
  2. Step 2: Convert to fraction form
    5,694,978.70/7,858,965.54 = 3,116,607.76/x
  3. Step 3: Cross multiply
    5,694,978.70x = 7,858,965.54 × 3,116,607.76
  4. Step 4: Simplify right side
    5,694,978.70x = 24,493,312,987,536.59
  5. Step 5: Solve for x
    x = 24,493,312,987,536.59/5,694,978.70
  6. Step 6: Final answer
    x = 4,300,861.21

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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.