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Finding the Fourth Proportional to 18,416.34, 27,629.15 and 7,319.34

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Solution

The fourth proportional to 18,416.34, 27,629.15 and 7,319.34 is: 10,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,416.34 : 27,629.15 = 7,319.34 : x
  2. Step 2: Convert to fraction form
    18,416.34/27,629.15 = 7,319.34/x
  3. Step 3: Cross multiply
    18,416.34x = 27,629.15 × 7,319.34
  4. Step 4: Simplify right side
    18,416.34x = 202,227,106.16
  5. Step 5: Solve for x
    x = 202,227,106.16/18,416.34
  6. Step 6: Final answer
    x = 10,980.85

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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.