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Finding the Fourth Proportional to 38,805, 53,537.46 and 21,806.92

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Solution

The fourth proportional to 38,805, 53,537.46 and 21,806.92 is: 30,086.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,805 : 53,537.46 = 21,806.92 : x
  2. Step 2: Convert to fraction form
    38,805/53,537.46 = 21,806.92/x
  3. Step 3: Cross multiply
    38,805x = 53,537.46 × 21,806.92
  4. Step 4: Simplify right side
    38,805x = 1,167,487,107.22
  5. Step 5: Solve for x
    x = 1,167,487,107.22/38,805
  6. Step 6: Final answer
    x = 30,086.00

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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.