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Finding the Fourth Proportional to 29,217.88, 40,325.74 and 28,245.88

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Solution

The fourth proportional to 29,217.88, 40,325.74 and 28,245.88 is: 38,984.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,217.88 : 40,325.74 = 28,245.88 : x
  2. Step 2: Convert to fraction form
    29,217.88/40,325.74 = 28,245.88/x
  3. Step 3: Cross multiply
    29,217.88x = 40,325.74 × 28,245.88
  4. Step 4: Simplify right side
    29,217.88x = 1,139,036,012.95
  5. Step 5: Solve for x
    x = 1,139,036,012.95/29,217.88
  6. Step 6: Final answer
    x = 38,984.21

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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.