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Finding the Fourth Proportional to 19,181.84, 26,460.84 and 12,458.48

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Solution

The fourth proportional to 19,181.84, 26,460.84 and 12,458.48 is: 17,186.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,181.84 : 26,460.84 = 12,458.48 : x
  2. Step 2: Convert to fraction form
    19,181.84/26,460.84 = 12,458.48/x
  3. Step 3: Cross multiply
    19,181.84x = 26,460.84 × 12,458.48
  4. Step 4: Simplify right side
    19,181.84x = 329,661,845.92
  5. Step 5: Solve for x
    x = 329,661,845.92/19,181.84
  6. Step 6: Final answer
    x = 17,186.14

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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.