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Finding the Fourth Proportional to 61,930.99, 85,465.88 and 35,079.05

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Solution

The fourth proportional to 61,930.99, 85,465.88 and 35,079.05 is: 48,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.99 : 85,465.88 = 35,079.05 : x
  2. Step 2: Convert to fraction form
    61,930.99/85,465.88 = 35,079.05/x
  3. Step 3: Cross multiply
    61,930.99x = 85,465.88 × 35,079.05
  4. Step 4: Simplify right side
    61,930.99x = 2,998,062,179.18
  5. Step 5: Solve for x
    x = 2,998,062,179.18/61,930.99
  6. Step 6: Final answer
    x = 48,409.73

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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.