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Finding the Fourth Proportional to 19,311, 26,649 and 10,927.52

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Solution

The fourth proportional to 19,311, 26,649 and 10,927.52 is: 15,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311 : 26,649 = 10,927.52 : x
  2. Step 2: Convert to fraction form
    19,311/26,649 = 10,927.52/x
  3. Step 3: Cross multiply
    19,311x = 26,649 × 10,927.52
  4. Step 4: Simplify right side
    19,311x = 291,207,480.48
  5. Step 5: Solve for x
    x = 291,207,480.48/19,311
  6. Step 6: Final answer
    x = 15,079.88

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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.