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Finding the Fourth Proportional to 6,967,879.88, 9,615,674.25 and 3,912,159.74

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Solution

The fourth proportional to 6,967,879.88, 9,615,674.25 and 3,912,159.74 is: 5,398,780.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,967,879.88 : 9,615,674.25 = 3,912,159.74 : x
  2. Step 2: Convert to fraction form
    6,967,879.88/9,615,674.25 = 3,912,159.74/x
  3. Step 3: Cross multiply
    6,967,879.88x = 9,615,674.25 × 3,912,159.74
  4. Step 4: Simplify right side
    6,967,879.88x = 37,618,053,625,726.32
  5. Step 5: Solve for x
    x = 37,618,053,625,726.32/6,967,879.88
  6. Step 6: Final answer
    x = 5,398,780.45

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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.