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Finding the Fourth Proportional to 19,978.41, 27,573.57 and 19,092.68

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Solution

The fourth proportional to 19,978.41, 27,573.57 and 19,092.68 is: 26,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978.41 : 27,573.57 = 19,092.68 : x
  2. Step 2: Convert to fraction form
    19,978.41/27,573.57 = 19,092.68/x
  3. Step 3: Cross multiply
    19,978.41x = 27,573.57 × 19,092.68
  4. Step 4: Simplify right side
    19,978.41x = 526,453,210.60
  5. Step 5: Solve for x
    x = 526,453,210.60/19,978.41
  6. Step 6: Final answer
    x = 26,351.11

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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.