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Finding the Fourth Proportional to 714,959,229.33, 986,655,535.21 and 393,100,795.44

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Solution

The fourth proportional to 714,959,229.33, 986,655,535.21 and 393,100,795.44 is: 542,485,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,959,229.33 : 986,655,535.21 = 393,100,795.44 : x
  2. Step 2: Convert to fraction form
    714,959,229.33/986,655,535.21 = 393,100,795.44/x
  3. Step 3: Cross multiply
    714,959,229.33x = 986,655,535.21 × 393,100,795.44
  4. Step 4: Simplify right side
    714,959,229.33x = 387,855,075,715,712,768
  5. Step 5: Solve for x
    x = 387,855,075,715,712,768/714,959,229.33
  6. Step 6: Final answer
    x = 542,485,584.92

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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.