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Finding the Fourth Proportional to 18,113.48, 27,130.08 and 13,922.63

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Solution

The fourth proportional to 18,113.48, 27,130.08 and 13,922.63 is: 20,853.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.48 : 27,130.08 = 13,922.63 : x
  2. Step 2: Convert to fraction form
    18,113.48/27,130.08 = 13,922.63/x
  3. Step 3: Cross multiply
    18,113.48x = 27,130.08 × 13,922.63
  4. Step 4: Simplify right side
    18,113.48x = 377,722,065.71
  5. Step 5: Solve for x
    x = 377,722,065.71/18,113.48
  6. Step 6: Final answer
    x = 20,853.09

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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.