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Finding the Fourth Proportional to 610,400.91, 842,363.35 and 338,480.27

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Solution

The fourth proportional to 610,400.91, 842,363.35 and 338,480.27 is: 467,108.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,400.91 : 842,363.35 = 338,480.27 : x
  2. Step 2: Convert to fraction form
    610,400.91/842,363.35 = 338,480.27/x
  3. Step 3: Cross multiply
    610,400.91x = 842,363.35 × 338,480.27
  4. Step 4: Simplify right side
    610,400.91x = 285,123,372,246.95
  5. Step 5: Solve for x
    x = 285,123,372,246.95/610,400.91
  6. Step 6: Final answer
    x = 467,108.36

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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.