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Finding the Fourth Proportional to 12,465.10, 18,696.08 and 5,449.94

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Solution

The fourth proportional to 12,465.10, 18,696.08 and 5,449.94 is: 8,174.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,465.10 : 18,696.08 = 5,449.94 : x
  2. Step 2: Convert to fraction form
    12,465.10/18,696.08 = 5,449.94/x
  3. Step 3: Cross multiply
    12,465.10x = 18,696.08 × 5,449.94
  4. Step 4: Simplify right side
    12,465.10x = 101,892,514.24
  5. Step 5: Solve for x
    x = 101,892,514.24/12,465.10
  6. Step 6: Final answer
    x = 8,174.22

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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.