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Finding the Fourth Proportional to 18,954.81, 28,416.02 and 9,583.11

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Solution

The fourth proportional to 18,954.81, 28,416.02 and 9,583.11 is: 14,366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.81 : 28,416.02 = 9,583.11 : x
  2. Step 2: Convert to fraction form
    18,954.81/28,416.02 = 9,583.11/x
  3. Step 3: Cross multiply
    18,954.81x = 28,416.02 × 9,583.11
  4. Step 4: Simplify right side
    18,954.81x = 272,313,797.51
  5. Step 5: Solve for x
    x = 272,313,797.51/18,954.81
  6. Step 6: Final answer
    x = 14,366.47

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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.