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Finding the Fourth Proportional to 2,986,642.19, 4,479,950.46 and 827,661.11

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Solution

The fourth proportional to 2,986,642.19, 4,479,950.46 and 827,661.11 is: 1,241,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986,642.19 : 4,479,950.46 = 827,661.11 : x
  2. Step 2: Convert to fraction form
    2,986,642.19/4,479,950.46 = 827,661.11/x
  3. Step 3: Cross multiply
    2,986,642.19x = 4,479,950.46 × 827,661.11
  4. Step 4: Simplify right side
    2,986,642.19x = 3,707,880,751,172.59
  5. Step 5: Solve for x
    x = 3,707,880,751,172.59/2,986,642.19
  6. Step 6: Final answer
    x = 1,241,488.10

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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.