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Finding the Fourth Proportional to 617,889,361.73, 851,875,934.92 and 445,886,104.05

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Solution

The fourth proportional to 617,889,361.73, 851,875,934.92 and 445,886,104.05 is: 614,737,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,889,361.73 : 851,875,934.92 = 445,886,104.05 : x
  2. Step 2: Convert to fraction form
    617,889,361.73/851,875,934.92 = 445,886,104.05/x
  3. Step 3: Cross multiply
    617,889,361.73x = 851,875,934.92 × 445,886,104.05
  4. Step 4: Simplify right side
    617,889,361.73x = 379,839,641,754,315,456
  5. Step 5: Solve for x
    x = 379,839,641,754,315,456/617,889,361.73
  6. Step 6: Final answer
    x = 614,737,306.20

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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.