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Finding the Fourth Proportional to 16,615.18, 22,928.61 and 9,163.18

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Solution

The fourth proportional to 16,615.18, 22,928.61 and 9,163.18 is: 12,645.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.18 : 22,928.61 = 9,163.18 : x
  2. Step 2: Convert to fraction form
    16,615.18/22,928.61 = 9,163.18/x
  3. Step 3: Cross multiply
    16,615.18x = 22,928.61 × 9,163.18
  4. Step 4: Simplify right side
    16,615.18x = 210,098,980.58
  5. Step 5: Solve for x
    x = 210,098,980.58/16,615.18
  6. Step 6: Final answer
    x = 12,645.00

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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.