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Finding the Fourth Proportional to 90,751.73, 136,127.73 and 35,347.73

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Solution

The fourth proportional to 90,751.73, 136,127.73 and 35,347.73 is: 53,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,751.73 : 136,127.73 = 35,347.73 : x
  2. Step 2: Convert to fraction form
    90,751.73/136,127.73 = 35,347.73/x
  3. Step 3: Cross multiply
    90,751.73x = 136,127.73 × 35,347.73
  4. Step 4: Simplify right side
    90,751.73x = 4,811,806,245.55
  5. Step 5: Solve for x
    x = 4,811,806,245.55/90,751.73
  6. Step 6: Final answer
    x = 53,021.65

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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.