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Finding the Fourth Proportional to 65,920.92, 98,881.41 and 18,541.05

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Solution

The fourth proportional to 65,920.92, 98,881.41 and 18,541.05 is: 27,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,920.92 : 98,881.41 = 18,541.05 : x
  2. Step 2: Convert to fraction form
    65,920.92/98,881.41 = 18,541.05/x
  3. Step 3: Cross multiply
    65,920.92x = 98,881.41 × 18,541.05
  4. Step 4: Simplify right side
    65,920.92x = 1,833,365,317.52
  5. Step 5: Solve for x
    x = 1,833,365,317.52/65,920.92
  6. Step 6: Final answer
    x = 27,811.58

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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.