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Finding the Fourth Proportional to 26,978.61, 37,230.82 and 15,648.58

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Solution

The fourth proportional to 26,978.61, 37,230.82 and 15,648.58 is: 21,595.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.61 : 37,230.82 = 15,648.58 : x
  2. Step 2: Convert to fraction form
    26,978.61/37,230.82 = 15,648.58/x
  3. Step 3: Cross multiply
    26,978.61x = 37,230.82 × 15,648.58
  4. Step 4: Simplify right side
    26,978.61x = 582,609,465.24
  5. Step 5: Solve for x
    x = 582,609,465.24/26,978.61
  6. Step 6: Final answer
    x = 21,595.24

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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.