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Finding the Fourth Proportional to 65,908.28, 98,879.28 and 19,161.16

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Solution

The fourth proportional to 65,908.28, 98,879.28 and 19,161.16 is: 28,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,908.28 : 98,879.28 = 19,161.16 : x
  2. Step 2: Convert to fraction form
    65,908.28/98,879.28 = 19,161.16/x
  3. Step 3: Cross multiply
    65,908.28x = 98,879.28 × 19,161.16
  4. Step 4: Simplify right side
    65,908.28x = 1,894,641,704.76
  5. Step 5: Solve for x
    x = 1,894,641,704.76/65,908.28
  6. Step 6: Final answer
    x = 28,746.64

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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.