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Finding the Fourth Proportional to 611,997.86, 844,540.26 and 340,058.77

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Solution

The fourth proportional to 611,997.86, 844,540.26 and 340,058.77 is: 469,271.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,997.86 : 844,540.26 = 340,058.77 : x
  2. Step 2: Convert to fraction form
    611,997.86/844,540.26 = 340,058.77/x
  3. Step 3: Cross multiply
    611,997.86x = 844,540.26 × 340,058.77
  4. Step 4: Simplify right side
    611,997.86x = 287,193,318,644.51
  5. Step 5: Solve for x
    x = 287,193,318,644.51/611,997.86
  6. Step 6: Final answer
    x = 469,271.77

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Half scale
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Double scale
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Similar ratio
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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.