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Finding the Fourth Proportional to 289,728,410.70, 434,592,616.05 and 197,895,405.90

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Solution

The fourth proportional to 289,728,410.70, 434,592,616.05 and 197,895,405.90 is: 296,843,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,728,410.70 : 434,592,616.05 = 197,895,405.90 : x
  2. Step 2: Convert to fraction form
    289,728,410.70/434,592,616.05 = 197,895,405.90/x
  3. Step 3: Cross multiply
    289,728,410.70x = 434,592,616.05 × 197,895,405.90
  4. Step 4: Simplify right side
    289,728,410.70x = 86,003,882,154,357,616
  5. Step 5: Solve for x
    x = 86,003,882,154,357,616/289,728,410.70
  6. Step 6: Final answer
    x = 296,843,108.85

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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.