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Finding the Fourth Proportional to 101,925.35, 140,607.92 and 66,126.59

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Solution

The fourth proportional to 101,925.35, 140,607.92 and 66,126.59 is: 91,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,925.35 : 140,607.92 = 66,126.59 : x
  2. Step 2: Convert to fraction form
    101,925.35/140,607.92 = 66,126.59/x
  3. Step 3: Cross multiply
    101,925.35x = 140,607.92 × 66,126.59
  4. Step 4: Simplify right side
    101,925.35x = 9,297,921,738.87
  5. Step 5: Solve for x
    x = 9,297,921,738.87/101,925.35
  6. Step 6: Final answer
    x = 91,222.86

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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.