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Finding the Fourth Proportional to 16,364.90, 22,583.49 and 9,991.46

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Solution

The fourth proportional to 16,364.90, 22,583.49 and 9,991.46 is: 13,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,364.90 : 22,583.49 = 9,991.46 : x
  2. Step 2: Convert to fraction form
    16,364.90/22,583.49 = 9,991.46/x
  3. Step 3: Cross multiply
    16,364.90x = 22,583.49 × 9,991.46
  4. Step 4: Simplify right side
    16,364.90x = 225,642,037.00
  5. Step 5: Solve for x
    x = 225,642,037.00/16,364.90
  6. Step 6: Final answer
    x = 13,788.17

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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.