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Finding the Fourth Proportional to 19,417, 29,125.50 and 4,825

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Solution

The fourth proportional to 19,417, 29,125.50 and 4,825 is: 7,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,417 : 29,125.50 = 4,825 : x
  2. Step 2: Convert to fraction form
    19,417/29,125.50 = 4,825/x
  3. Step 3: Cross multiply
    19,417x = 29,125.50 × 4,825
  4. Step 4: Simplify right side
    19,417x = 140,530,537.50
  5. Step 5: Solve for x
    x = 140,530,537.50/19,417
  6. Step 6: Final answer
    x = 7,237.50

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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.