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Finding the Fourth Proportional to 90,493.96, 124,879.28 and 49,657.96

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Solution

The fourth proportional to 90,493.96, 124,879.28 and 49,657.96 is: 68,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,493.96 : 124,879.28 = 49,657.96 : x
  2. Step 2: Convert to fraction form
    90,493.96/124,879.28 = 49,657.96/x
  3. Step 3: Cross multiply
    90,493.96x = 124,879.28 × 49,657.96
  4. Step 4: Simplify right side
    90,493.96x = 6,201,250,291.07
  5. Step 5: Solve for x
    x = 6,201,250,291.07/90,493.96
  6. Step 6: Final answer
    x = 68,526.68

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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.