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Finding the Fourth Proportional to 65,851.17, 90,874.60 and 35,636.49

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Solution

The fourth proportional to 65,851.17, 90,874.60 and 35,636.49 is: 49,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.17 : 90,874.60 = 35,636.49 : x
  2. Step 2: Convert to fraction form
    65,851.17/90,874.60 = 35,636.49/x
  3. Step 3: Cross multiply
    65,851.17x = 90,874.60 × 35,636.49
  4. Step 4: Simplify right side
    65,851.17x = 3,238,451,629.93
  5. Step 5: Solve for x
    x = 3,238,451,629.93/65,851.17
  6. Step 6: Final answer
    x = 49,178.35

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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.