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Finding the Fourth Proportional to 413,108.85, 618,855.44 and 285,005.33

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Solution

The fourth proportional to 413,108.85, 618,855.44 and 285,005.33 is: 426,950.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,108.85 : 618,855.44 = 285,005.33 : x
  2. Step 2: Convert to fraction form
    413,108.85/618,855.44 = 285,005.33/x
  3. Step 3: Cross multiply
    413,108.85x = 618,855.44 × 285,005.33
  4. Step 4: Simplify right side
    413,108.85x = 176,377,094,380.19
  5. Step 5: Solve for x
    x = 176,377,094,380.19/413,108.85
  6. Step 6: Final answer
    x = 426,950.66

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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.