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Finding the Fourth Proportional to 15,054.72, 20,776.32 and 8,766.72

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Solution

The fourth proportional to 15,054.72, 20,776.32 and 8,766.72 is: 12,098.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.72 : 20,776.32 = 8,766.72 : x
  2. Step 2: Convert to fraction form
    15,054.72/20,776.32 = 8,766.72/x
  3. Step 3: Cross multiply
    15,054.72x = 20,776.32 × 8,766.72
  4. Step 4: Simplify right side
    15,054.72x = 182,140,180.07
  5. Step 5: Solve for x
    x = 182,140,180.07/15,054.72
  6. Step 6: Final answer
    x = 12,098.54

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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.