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Finding the Fourth Proportional to 65,347.71, 98,021.61 and 18,600.60

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Solution

The fourth proportional to 65,347.71, 98,021.61 and 18,600.60 is: 27,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,347.71 : 98,021.61 = 18,600.60 : x
  2. Step 2: Convert to fraction form
    65,347.71/98,021.61 = 18,600.60/x
  3. Step 3: Cross multiply
    65,347.71x = 98,021.61 × 18,600.60
  4. Step 4: Simplify right side
    65,347.71x = 1,823,260,758.97
  5. Step 5: Solve for x
    x = 1,823,260,758.97/65,347.71
  6. Step 6: Final answer
    x = 27,900.91

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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.