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Finding the Fourth Proportional to 14,939.17, 20,615.51 and 8,967.31

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Solution

The fourth proportional to 14,939.17, 20,615.51 and 8,967.31 is: 12,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.17 : 20,615.51 = 8,967.31 : x
  2. Step 2: Convert to fraction form
    14,939.17/20,615.51 = 8,967.31/x
  3. Step 3: Cross multiply
    14,939.17x = 20,615.51 × 8,967.31
  4. Step 4: Simplify right side
    14,939.17x = 184,865,639.86
  5. Step 5: Solve for x
    x = 184,865,639.86/14,939.17
  6. Step 6: Final answer
    x = 12,374.56

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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.