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Finding the Fourth Proportional to 618,953.35, 928,433.22 and 281,758.18

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Solution

The fourth proportional to 618,953.35, 928,433.22 and 281,758.18 is: 422,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,953.35 : 928,433.22 = 281,758.18 : x
  2. Step 2: Convert to fraction form
    618,953.35/928,433.22 = 281,758.18/x
  3. Step 3: Cross multiply
    618,953.35x = 928,433.22 × 281,758.18
  4. Step 4: Simplify right side
    618,953.35x = 261,593,654,318.74
  5. Step 5: Solve for x
    x = 261,593,654,318.74/618,953.35
  6. Step 6: Final answer
    x = 422,638.72

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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.