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Finding the Fourth Proportional to 1,707,857,912.72, 2,561,284,315.92 and 774,640,868.24

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Solution

The fourth proportional to 1,707,857,912.72, 2,561,284,315.92 and 774,640,868.24 is: 1,161,733,357.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707,857,912.72 : 2,561,284,315.92 = 774,640,868.24 : x
  2. Step 2: Convert to fraction form
    1,707,857,912.72/2,561,284,315.92 = 774,640,868.24/x
  3. Step 3: Cross multiply
    1,707,857,912.72x = 2,561,284,315.92 × 774,640,868.24
  4. Step 4: Simplify right side
    1,707,857,912.72x = 1,984,075,506,293,763,328
  5. Step 5: Solve for x
    x = 1,984,075,506,293,763,328/1,707,857,912.72
  6. Step 6: Final answer
    x = 1,161,733,357.04

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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.