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Finding the Fourth Proportional to 171,117.80, 256,720.44 and 65,908.52

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Solution

The fourth proportional to 171,117.80, 256,720.44 and 65,908.52 is: 98,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,117.80 : 256,720.44 = 65,908.52 : x
  2. Step 2: Convert to fraction form
    171,117.80/256,720.44 = 65,908.52/x
  3. Step 3: Cross multiply
    171,117.80x = 256,720.44 × 65,908.52
  4. Step 4: Simplify right side
    171,117.80x = 16,920,064,254.15
  5. Step 5: Solve for x
    x = 16,920,064,254.15/171,117.80
  6. Step 6: Final answer
    x = 98,879.63

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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.