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Finding the Fourth Proportional to 14,641.08, 20,203.96 and 8,268.40

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Solution

The fourth proportional to 14,641.08, 20,203.96 and 8,268.40 is: 11,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,641.08 : 20,203.96 = 8,268.40 : x
  2. Step 2: Convert to fraction form
    14,641.08/20,203.96 = 8,268.40/x
  3. Step 3: Cross multiply
    14,641.08x = 20,203.96 × 8,268.40
  4. Step 4: Simplify right side
    14,641.08x = 167,054,422.86
  5. Step 5: Solve for x
    x = 167,054,422.86/14,641.08
  6. Step 6: Final answer
    x = 11,409.98

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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.