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Finding the Fourth Proportional to 16,991.16, 25,486.74 and 6,605.34

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Solution

The fourth proportional to 16,991.16, 25,486.74 and 6,605.34 is: 9,908.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.16 : 25,486.74 = 6,605.34 : x
  2. Step 2: Convert to fraction form
    16,991.16/25,486.74 = 6,605.34/x
  3. Step 3: Cross multiply
    16,991.16x = 25,486.74 × 6,605.34
  4. Step 4: Simplify right side
    16,991.16x = 168,348,583.19
  5. Step 5: Solve for x
    x = 168,348,583.19/16,991.16
  6. Step 6: Final answer
    x = 9,908.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.