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Finding the Fourth Proportional to 391,516.50, 587,274.75 and 96,028.50

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Solution

The fourth proportional to 391,516.50, 587,274.75 and 96,028.50 is: 144,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,516.50 : 587,274.75 = 96,028.50 : x
  2. Step 2: Convert to fraction form
    391,516.50/587,274.75 = 96,028.50/x
  3. Step 3: Cross multiply
    391,516.50x = 587,274.75 × 96,028.50
  4. Step 4: Simplify right side
    391,516.50x = 56,395,113,330.38
  5. Step 5: Solve for x
    x = 56,395,113,330.38/391,516.50
  6. Step 6: Final answer
    x = 144,042.75

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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.