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Finding the Fourth Proportional to 218,639.82, 327,931.56 and 92,330.04

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Solution

The fourth proportional to 218,639.82, 327,931.56 and 92,330.04 is: 138,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,639.82 : 327,931.56 = 92,330.04 : x
  2. Step 2: Convert to fraction form
    218,639.82/327,931.56 = 92,330.04/x
  3. Step 3: Cross multiply
    218,639.82x = 327,931.56 × 92,330.04
  4. Step 4: Simplify right side
    218,639.82x = 30,277,934,052.06
  5. Step 5: Solve for x
    x = 30,277,934,052.06/218,639.82
  6. Step 6: Final answer
    x = 138,483.16

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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.