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Finding the Fourth Proportional to 15,796.13, 21,798.72 and 8,723.07

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Solution

The fourth proportional to 15,796.13, 21,798.72 and 8,723.07 is: 12,037.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.13 : 21,798.72 = 8,723.07 : x
  2. Step 2: Convert to fraction form
    15,796.13/21,798.72 = 8,723.07/x
  3. Step 3: Cross multiply
    15,796.13x = 21,798.72 × 8,723.07
  4. Step 4: Simplify right side
    15,796.13x = 190,151,760.47
  5. Step 5: Solve for x
    x = 190,151,760.47/15,796.13
  6. Step 6: Final answer
    x = 12,037.87

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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.