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Finding the Fourth Proportional to 236,709.54, 354,941.91 and 86,911.38

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Solution

The fourth proportional to 236,709.54, 354,941.91 and 86,911.38 is: 130,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,709.54 : 354,941.91 = 86,911.38 : x
  2. Step 2: Convert to fraction form
    236,709.54/354,941.91 = 86,911.38/x
  3. Step 3: Cross multiply
    236,709.54x = 354,941.91 × 86,911.38
  4. Step 4: Simplify right side
    236,709.54x = 30,848,491,217.94
  5. Step 5: Solve for x
    x = 30,848,491,217.94/236,709.54
  6. Step 6: Final answer
    x = 130,322.13

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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.