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Finding the Fourth Proportional to 184,874.14, 255,126.12 and 99,991

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Solution

The fourth proportional to 184,874.14, 255,126.12 and 99,991 is: 137,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,874.14 : 255,126.12 = 99,991 : x
  2. Step 2: Convert to fraction form
    184,874.14/255,126.12 = 99,991/x
  3. Step 3: Cross multiply
    184,874.14x = 255,126.12 × 99,991
  4. Step 4: Simplify right side
    184,874.14x = 25,510,315,864.92
  5. Step 5: Solve for x
    x = 25,510,315,864.92/184,874.14
  6. Step 6: Final answer
    x = 137,987.48

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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.