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Finding the Fourth Proportional to 61,960.50, 92,940.78 and 20,410.74

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Solution

The fourth proportional to 61,960.50, 92,940.78 and 20,410.74 is: 30,616.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,960.50 : 92,940.78 = 20,410.74 : x
  2. Step 2: Convert to fraction form
    61,960.50/92,940.78 = 20,410.74/x
  3. Step 3: Cross multiply
    61,960.50x = 92,940.78 × 20,410.74
  4. Step 4: Simplify right side
    61,960.50x = 1,896,990,095.98
  5. Step 5: Solve for x
    x = 1,896,990,095.98/61,960.50
  6. Step 6: Final answer
    x = 30,616.12

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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.