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Finding the Fourth Proportional to 15,760.94, 21,750.78 and 9,046.84

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Solution

The fourth proportional to 15,760.94, 21,750.78 and 9,046.84 is: 12,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760.94 : 21,750.78 = 9,046.84 : x
  2. Step 2: Convert to fraction form
    15,760.94/21,750.78 = 9,046.84/x
  3. Step 3: Cross multiply
    15,760.94x = 21,750.78 × 9,046.84
  4. Step 4: Simplify right side
    15,760.94x = 196,775,826.54
  5. Step 5: Solve for x
    x = 196,775,826.54/15,760.94
  6. Step 6: Final answer
    x = 12,485.03

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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.