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Finding the Fourth Proportional to 19,396.54, 29,099.70 and 7,710.70

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Solution

The fourth proportional to 19,396.54, 29,099.70 and 7,710.70 is: 11,567.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,396.54 : 29,099.70 = 7,710.70 : x
  2. Step 2: Convert to fraction form
    19,396.54/29,099.70 = 7,710.70/x
  3. Step 3: Cross multiply
    19,396.54x = 29,099.70 × 7,710.70
  4. Step 4: Simplify right side
    19,396.54x = 224,379,056.79
  5. Step 5: Solve for x
    x = 224,379,056.79/19,396.54
  6. Step 6: Final answer
    x = 11,567.99

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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.