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Finding the Fourth Proportional to 18,048.21, 24,905.81 and 9,981.34

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Solution

The fourth proportional to 18,048.21, 24,905.81 and 9,981.34 is: 13,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,048.21 : 24,905.81 = 9,981.34 : x
  2. Step 2: Convert to fraction form
    18,048.21/24,905.81 = 9,981.34/x
  3. Step 3: Cross multiply
    18,048.21x = 24,905.81 × 9,981.34
  4. Step 4: Simplify right side
    18,048.21x = 248,593,233.06
  5. Step 5: Solve for x
    x = 248,593,233.06/18,048.21
  6. Step 6: Final answer
    x = 13,773.84

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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.