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Finding the Fourth Proportional to 190,872.86, 285,873.10 and 91,103.08

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Solution

The fourth proportional to 190,872.86, 285,873.10 and 91,103.08 is: 136,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,872.86 : 285,873.10 = 91,103.08 : x
  2. Step 2: Convert to fraction form
    190,872.86/285,873.10 = 91,103.08/x
  3. Step 3: Cross multiply
    190,872.86x = 285,873.10 × 91,103.08
  4. Step 4: Simplify right side
    190,872.86x = 26,043,919,492.72
  5. Step 5: Solve for x
    x = 26,043,919,492.72/190,872.86
  6. Step 6: Final answer
    x = 136,446.43

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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.