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Finding the Fourth Proportional to 79,290.54, 118,974.60 and 34,911.72

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Solution

The fourth proportional to 79,290.54, 118,974.60 and 34,911.72 is: 52,384.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290.54 : 118,974.60 = 34,911.72 : x
  2. Step 2: Convert to fraction form
    79,290.54/118,974.60 = 34,911.72/x
  3. Step 3: Cross multiply
    79,290.54x = 118,974.60 × 34,911.72
  4. Step 4: Simplify right side
    79,290.54x = 4,153,607,922.31
  5. Step 5: Solve for x
    x = 4,153,607,922.31/79,290.54
  6. Step 6: Final answer
    x = 52,384.66

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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.