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Finding the Fourth Proportional to 13,641.72, 18,826.02 and 7,673.33

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Solution

The fourth proportional to 13,641.72, 18,826.02 and 7,673.33 is: 10,589.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.72 : 18,826.02 = 7,673.33 : x
  2. Step 2: Convert to fraction form
    13,641.72/18,826.02 = 7,673.33/x
  3. Step 3: Cross multiply
    13,641.72x = 18,826.02 × 7,673.33
  4. Step 4: Simplify right side
    13,641.72x = 144,458,311.11
  5. Step 5: Solve for x
    x = 144,458,311.11/13,641.72
  6. Step 6: Final answer
    x = 10,589.45

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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.