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Finding the Fourth Proportional to 673,135.21, 928,843.20 and 411,621.95

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Solution

The fourth proportional to 673,135.21, 928,843.20 and 411,621.95 is: 567,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,135.21 : 928,843.20 = 411,621.95 : x
  2. Step 2: Convert to fraction form
    673,135.21/928,843.20 = 411,621.95/x
  3. Step 3: Cross multiply
    673,135.21x = 928,843.20 × 411,621.95
  4. Step 4: Simplify right side
    673,135.21x = 382,332,251,550.35
  5. Step 5: Solve for x
    x = 382,332,251,550.35/673,135.21
  6. Step 6: Final answer
    x = 567,987.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.