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Finding the Fourth Proportional to 18,153.40, 27,193.66 and 8,279.10

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Solution

The fourth proportional to 18,153.40, 27,193.66 and 8,279.10 is: 12,402.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.40 : 27,193.66 = 8,279.10 : x
  2. Step 2: Convert to fraction form
    18,153.40/27,193.66 = 8,279.10/x
  3. Step 3: Cross multiply
    18,153.40x = 27,193.66 × 8,279.10
  4. Step 4: Simplify right side
    18,153.40x = 225,139,030.51
  5. Step 5: Solve for x
    x = 225,139,030.51/18,153.40
  6. Step 6: Final answer
    x = 12,402.03

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Half scale
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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.