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Finding the Fourth Proportional to 16,005.74, 22,080.74 and 9,287.46

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Solution

The fourth proportional to 16,005.74, 22,080.74 and 9,287.46 is: 12,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,005.74 : 22,080.74 = 9,287.46 : x
  2. Step 2: Convert to fraction form
    16,005.74/22,080.74 = 9,287.46/x
  3. Step 3: Cross multiply
    16,005.74x = 22,080.74 × 9,287.46
  4. Step 4: Simplify right side
    16,005.74x = 205,073,943.08
  5. Step 5: Solve for x
    x = 205,073,943.08/16,005.74
  6. Step 6: Final answer
    x = 12,812.53

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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.