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Finding the Fourth Proportional to 39,940.48, 59,910.08 and 15,316.48

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Solution

The fourth proportional to 39,940.48, 59,910.08 and 15,316.48 is: 22,974.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.48 : 59,910.08 = 15,316.48 : x
  2. Step 2: Convert to fraction form
    39,940.48/59,910.08 = 15,316.48/x
  3. Step 3: Cross multiply
    39,940.48x = 59,910.08 × 15,316.48
  4. Step 4: Simplify right side
    39,940.48x = 917,611,542.12
  5. Step 5: Solve for x
    x = 917,611,542.12/39,940.48
  6. Step 6: Final answer
    x = 22,974.47

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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.