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Finding the Fourth Proportional to 6,967,986.86, 9,615,496.92 and 3,870,710.96

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Solution

The fourth proportional to 6,967,986.86, 9,615,496.92 and 3,870,710.96 is: 5,341,400.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,967,986.86 : 9,615,496.92 = 3,870,710.96 : x
  2. Step 2: Convert to fraction form
    6,967,986.86/9,615,496.92 = 3,870,710.96/x
  3. Step 3: Cross multiply
    6,967,986.86x = 9,615,496.92 × 3,870,710.96
  4. Step 4: Simplify right side
    6,967,986.86x = 37,218,809,314,090.24
  5. Step 5: Solve for x
    x = 37,218,809,314,090.24/6,967,986.86
  6. Step 6: Final answer
    x = 5,341,400.62

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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.