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Finding the Fourth Proportional to 11,895.59, 16,416.05 and 6,518.18

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Solution

The fourth proportional to 11,895.59, 16,416.05 and 6,518.18 is: 8,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.59 : 16,416.05 = 6,518.18 : x
  2. Step 2: Convert to fraction form
    11,895.59/16,416.05 = 6,518.18/x
  3. Step 3: Cross multiply
    11,895.59x = 16,416.05 × 6,518.18
  4. Step 4: Simplify right side
    11,895.59x = 107,002,654.12
  5. Step 5: Solve for x
    x = 107,002,654.12/11,895.59
  6. Step 6: Final answer
    x = 8,995.16

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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.