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Finding the Fourth Proportional to 639,577,805.70, 959,366,708.55 and 593,661,303.30

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Solution

The fourth proportional to 639,577,805.70, 959,366,708.55 and 593,661,303.30 is: 890,491,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,577,805.70 : 959,366,708.55 = 593,661,303.30 : x
  2. Step 2: Convert to fraction form
    639,577,805.70/959,366,708.55 = 593,661,303.30/x
  3. Step 3: Cross multiply
    639,577,805.70x = 959,366,708.55 × 593,661,303.30
  4. Step 4: Simplify right side
    639,577,805.70x = 569,538,890,540,424,192
  5. Step 5: Solve for x
    x = 569,538,890,540,424,192/639,577,805.70
  6. Step 6: Final answer
    x = 890,491,954.95

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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.