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Finding the Fourth Proportional to 32,712.40, 49,072.20 and 11,940.40

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Solution

The fourth proportional to 32,712.40, 49,072.20 and 11,940.40 is: 17,911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,712.40 : 49,072.20 = 11,940.40 : x
  2. Step 2: Convert to fraction form
    32,712.40/49,072.20 = 11,940.40/x
  3. Step 3: Cross multiply
    32,712.40x = 49,072.20 × 11,940.40
  4. Step 4: Simplify right side
    32,712.40x = 585,941,696.88
  5. Step 5: Solve for x
    x = 585,941,696.88/32,712.40
  6. Step 6: Final answer
    x = 17,911.91

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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.