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Finding the Fourth Proportional to 15,846.13, 21,866.83 and 8,674.68

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Solution

The fourth proportional to 15,846.13, 21,866.83 and 8,674.68 is: 11,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,846.13 : 21,866.83 = 8,674.68 : x
  2. Step 2: Convert to fraction form
    15,846.13/21,866.83 = 8,674.68/x
  3. Step 3: Cross multiply
    15,846.13x = 21,866.83 × 8,674.68
  4. Step 4: Simplify right side
    15,846.13x = 189,687,686.22
  5. Step 5: Solve for x
    x = 189,687,686.22/15,846.13
  6. Step 6: Final answer
    x = 11,970.60

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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.