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Finding the Fourth Proportional to 5,765,804.79, 7,956,976.68 and 3,187,651.64

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Solution

The fourth proportional to 5,765,804.79, 7,956,976.68 and 3,187,651.64 is: 4,399,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,765,804.79 : 7,956,976.68 = 3,187,651.64 : x
  2. Step 2: Convert to fraction form
    5,765,804.79/7,956,976.68 = 3,187,651.64/x
  3. Step 3: Cross multiply
    5,765,804.79x = 7,956,976.68 × 3,187,651.64
  4. Step 4: Simplify right side
    5,765,804.79x = 25,364,069,723,658.87
  5. Step 5: Solve for x
    x = 25,364,069,723,658.87/5,765,804.79
  6. Step 6: Final answer
    x = 4,399,051.07

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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.