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Finding the Fourth Proportional to 62,820.92, 86,690.49 and 35,965.93

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Solution

The fourth proportional to 62,820.92, 86,690.49 and 35,965.93 is: 49,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,820.92 : 86,690.49 = 35,965.93 : x
  2. Step 2: Convert to fraction form
    62,820.92/86,690.49 = 35,965.93/x
  3. Step 3: Cross multiply
    62,820.92x = 86,690.49 × 35,965.93
  4. Step 4: Simplify right side
    62,820.92x = 3,117,904,108.26
  5. Step 5: Solve for x
    x = 3,117,904,108.26/62,820.92
  6. Step 6: Final answer
    x = 49,631.62

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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.