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Finding the Fourth Proportional to 289,836,230.40, 434,628,374.40 and 95,672,620.80

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Solution

The fourth proportional to 289,836,230.40, 434,628,374.40 and 95,672,620.80 is: 143,467,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,836,230.40 : 434,628,374.40 = 95,672,620.80 : x
  2. Step 2: Convert to fraction form
    289,836,230.40/434,628,374.40 = 95,672,620.80/x
  3. Step 3: Cross multiply
    289,836,230.40x = 434,628,374.40 × 95,672,620.80
  4. Step 4: Simplify right side
    289,836,230.40x = 41,582,035,652,891,624
  5. Step 5: Solve for x
    x = 41,582,035,652,891,624/289,836,230.40
  6. Step 6: Final answer
    x = 143,467,349.11

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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.