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Finding the Fourth Proportional to 39,483.75, 59,235.90 and 11,781.75

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Solution

The fourth proportional to 39,483.75, 59,235.90 and 11,781.75 is: 17,675.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,483.75 : 59,235.90 = 11,781.75 : x
  2. Step 2: Convert to fraction form
    39,483.75/59,235.90 = 11,781.75/x
  3. Step 3: Cross multiply
    39,483.75x = 59,235.90 × 11,781.75
  4. Step 4: Simplify right side
    39,483.75x = 697,902,564.83
  5. Step 5: Solve for x
    x = 697,902,564.83/39,483.75
  6. Step 6: Final answer
    x = 17,675.69

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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.