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Finding the Fourth Proportional to 28,492.88, 42,743.44 and 8,766.16

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Solution

The fourth proportional to 28,492.88, 42,743.44 and 8,766.16 is: 13,150.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.88 : 42,743.44 = 8,766.16 : x
  2. Step 2: Convert to fraction form
    28,492.88/42,743.44 = 8,766.16/x
  3. Step 3: Cross multiply
    28,492.88x = 42,743.44 × 8,766.16
  4. Step 4: Simplify right side
    28,492.88x = 374,695,833.99
  5. Step 5: Solve for x
    x = 374,695,833.99/28,492.88
  6. Step 6: Final answer
    x = 13,150.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.