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Finding the Fourth Proportional to 65,840.86, 90,859.73 and 35,625.52

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Solution

The fourth proportional to 65,840.86, 90,859.73 and 35,625.52 is: 49,162.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,840.86 : 90,859.73 = 35,625.52 : x
  2. Step 2: Convert to fraction form
    65,840.86/90,859.73 = 35,625.52/x
  3. Step 3: Cross multiply
    65,840.86x = 90,859.73 × 35,625.52
  4. Step 4: Simplify right side
    65,840.86x = 3,236,925,128.31
  5. Step 5: Solve for x
    x = 3,236,925,128.31/65,840.86
  6. Step 6: Final answer
    x = 49,162.86

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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.