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Finding the Fourth Proportional to 553,679,589.80, 830,519,384.70 and 144,777,074.60

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Solution

The fourth proportional to 553,679,589.80, 830,519,384.70 and 144,777,074.60 is: 217,165,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,679,589.80 : 830,519,384.70 = 144,777,074.60 : x
  2. Step 2: Convert to fraction form
    553,679,589.80/830,519,384.70 = 144,777,074.60/x
  3. Step 3: Cross multiply
    553,679,589.80x = 830,519,384.70 × 144,777,074.60
  4. Step 4: Simplify right side
    553,679,589.80x = 120,240,166,915,458,000
  5. Step 5: Solve for x
    x = 120,240,166,915,458,000/553,679,589.80
  6. Step 6: Final answer
    x = 217,165,611.90

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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.