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Finding the Fourth Proportional to 35,286.48, 48,696.48 and 20,382.48

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Solution

The fourth proportional to 35,286.48, 48,696.48 and 20,382.48 is: 28,128.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,286.48 : 48,696.48 = 20,382.48 : x
  2. Step 2: Convert to fraction form
    35,286.48/48,696.48 = 20,382.48/x
  3. Step 3: Cross multiply
    35,286.48x = 48,696.48 × 20,382.48
  4. Step 4: Simplify right side
    35,286.48x = 992,555,029.67
  5. Step 5: Solve for x
    x = 992,555,029.67/35,286.48
  6. Step 6: Final answer
    x = 28,128.48

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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.