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Finding the Fourth Proportional to 189,292.96, 285,245.20 and 171,522.80

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Solution

The fourth proportional to 189,292.96, 285,245.20 and 171,522.80 is: 258,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,292.96 : 285,245.20 = 171,522.80 : x
  2. Step 2: Convert to fraction form
    189,292.96/285,245.20 = 171,522.80/x
  3. Step 3: Cross multiply
    189,292.96x = 285,245.20 × 171,522.80
  4. Step 4: Simplify right side
    189,292.96x = 48,926,055,390.56
  5. Step 5: Solve for x
    x = 48,926,055,390.56/189,292.96
  6. Step 6: Final answer
    x = 258,467.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.