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Finding the Fourth Proportional to 15,048.61, 20,745.43 and 10,558.44

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Solution

The fourth proportional to 15,048.61, 20,745.43 and 10,558.44 is: 14,555.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.61 : 20,745.43 = 10,558.44 : x
  2. Step 2: Convert to fraction form
    15,048.61/20,745.43 = 10,558.44/x
  3. Step 3: Cross multiply
    15,048.61x = 20,745.43 × 10,558.44
  4. Step 4: Simplify right side
    15,048.61x = 219,039,377.93
  5. Step 5: Solve for x
    x = 219,039,377.93/15,048.61
  6. Step 6: Final answer
    x = 14,555.46

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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.