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Finding the Fourth Proportional to 61,486.67, 84,812.59 and 38,786.02

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Solution

The fourth proportional to 61,486.67, 84,812.59 and 38,786.02 is: 53,500.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.67 : 84,812.59 = 38,786.02 : x
  2. Step 2: Convert to fraction form
    61,486.67/84,812.59 = 38,786.02/x
  3. Step 3: Cross multiply
    61,486.67x = 84,812.59 × 38,786.02
  4. Step 4: Simplify right side
    61,486.67x = 3,289,542,811.99
  5. Step 5: Solve for x
    x = 3,289,542,811.99/61,486.67
  6. Step 6: Final answer
    x = 53,500.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.