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Finding the Fourth Proportional to 221,235.42, 331,854.30 and 55,023.42

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Solution

The fourth proportional to 221,235.42, 331,854.30 and 55,023.42 is: 82,535.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,235.42 : 331,854.30 = 55,023.42 : x
  2. Step 2: Convert to fraction form
    221,235.42/331,854.30 = 55,023.42/x
  3. Step 3: Cross multiply
    221,235.42x = 331,854.30 × 55,023.42
  4. Step 4: Simplify right side
    221,235.42x = 18,259,758,527.71
  5. Step 5: Solve for x
    x = 18,259,758,527.71/221,235.42
  6. Step 6: Final answer
    x = 82,535.42

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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.