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Finding the Fourth Proportional to 6,661,559.12, 9,993,721.08 and 2,672,782.16

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Solution

The fourth proportional to 6,661,559.12, 9,993,721.08 and 2,672,782.16 is: 4,009,727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661,559.12 : 9,993,721.08 = 2,672,782.16 : x
  2. Step 2: Convert to fraction form
    6,661,559.12/9,993,721.08 = 2,672,782.16/x
  3. Step 3: Cross multiply
    6,661,559.12x = 9,993,721.08 × 2,672,782.16
  4. Step 4: Simplify right side
    6,661,559.12x = 26,711,039,414,639.93
  5. Step 5: Solve for x
    x = 26,711,039,414,639.93/6,661,559.12
  6. Step 6: Final answer
    x = 4,009,727.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.