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Finding the Fourth Proportional to 82,956.66, 124,435.44 and 20,627.16

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Solution

The fourth proportional to 82,956.66, 124,435.44 and 20,627.16 is: 30,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,956.66 : 124,435.44 = 20,627.16 : x
  2. Step 2: Convert to fraction form
    82,956.66/124,435.44 = 20,627.16/x
  3. Step 3: Cross multiply
    82,956.66x = 124,435.44 × 20,627.16
  4. Step 4: Simplify right side
    82,956.66x = 2,566,749,730.55
  5. Step 5: Solve for x
    x = 2,566,749,730.55/82,956.66
  6. Step 6: Final answer
    x = 30,940.85

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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.