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Finding the Fourth Proportional to 28,782.41, 43,173.90 and 9,061.11

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Solution

The fourth proportional to 28,782.41, 43,173.90 and 9,061.11 is: 13,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,782.41 : 43,173.90 = 9,061.11 : x
  2. Step 2: Convert to fraction form
    28,782.41/43,173.90 = 9,061.11/x
  3. Step 3: Cross multiply
    28,782.41x = 43,173.90 × 9,061.11
  4. Step 4: Simplify right side
    28,782.41x = 391,203,457.03
  5. Step 5: Solve for x
    x = 391,203,457.03/28,782.41
  6. Step 6: Final answer
    x = 13,591.76

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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.