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Finding the Fourth Proportional to 79,906.69, 119,874.62 and 39,946.56

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Solution

The fourth proportional to 79,906.69, 119,874.62 and 39,946.56 is: 59,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,906.69 : 119,874.62 = 39,946.56 : x
  2. Step 2: Convert to fraction form
    79,906.69/119,874.62 = 39,946.56/x
  3. Step 3: Cross multiply
    79,906.69x = 119,874.62 × 39,946.56
  4. Step 4: Simplify right side
    79,906.69x = 4,788,578,700.31
  5. Step 5: Solve for x
    x = 4,788,578,700.31/79,906.69
  6. Step 6: Final answer
    x = 59,927.13

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1.5x scale

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.