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Finding the Fourth Proportional to 29,696.77, 40,981.80 and 17,121.52

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Solution

The fourth proportional to 29,696.77, 40,981.80 and 17,121.52 is: 23,627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,696.77 : 40,981.80 = 17,121.52 : x
  2. Step 2: Convert to fraction form
    29,696.77/40,981.80 = 17,121.52/x
  3. Step 3: Cross multiply
    29,696.77x = 40,981.80 × 17,121.52
  4. Step 4: Simplify right side
    29,696.77x = 701,670,708.34
  5. Step 5: Solve for x
    x = 701,670,708.34/29,696.77
  6. Step 6: Final answer
    x = 23,627.85

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1.5x scale

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.