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Finding the Fourth Proportional to 6,407,308.14, 8,844,636.15 and 4,203,009.78

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Solution

The fourth proportional to 6,407,308.14, 8,844,636.15 and 4,203,009.78 is: 5,801,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407,308.14 : 8,844,636.15 = 4,203,009.78 : x
  2. Step 2: Convert to fraction form
    6,407,308.14/8,844,636.15 = 4,203,009.78/x
  3. Step 3: Cross multiply
    6,407,308.14x = 8,844,636.15 × 4,203,009.78
  4. Step 4: Simplify right side
    6,407,308.14x = 37,174,092,238,991.55
  5. Step 5: Solve for x
    x = 37,174,092,238,991.55/6,407,308.14
  6. Step 6: Final answer
    x = 5,801,826.82

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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.