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Finding the Fourth Proportional to 1,439,673,950.72, 1,986,751,968 and 779,625,367.04

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Solution

The fourth proportional to 1,439,673,950.72, 1,986,751,968 and 779,625,367.04 is: 1,075,884,044.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,673,950.72 : 1,986,751,968 = 779,625,367.04 : x
  2. Step 2: Convert to fraction form
    1,439,673,950.72/1,986,751,968 = 779,625,367.04/x
  3. Step 3: Cross multiply
    1,439,673,950.72x = 1,986,751,968 × 779,625,367.04
  4. Step 4: Simplify right side
    1,439,673,950.72x = 1,548,922,232,269,442,304
  5. Step 5: Solve for x
    x = 1,548,922,232,269,442,304/1,439,673,950.72
  6. Step 6: Final answer
    x = 1,075,884,044.09

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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.