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Finding the Fourth Proportional to 807,718.60, 1,211,577.90 and 275,840.20

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Solution

The fourth proportional to 807,718.60, 1,211,577.90 and 275,840.20 is: 413,760.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,718.60 : 1,211,577.90 = 275,840.20 : x
  2. Step 2: Convert to fraction form
    807,718.60/1,211,577.90 = 275,840.20/x
  3. Step 3: Cross multiply
    807,718.60x = 1,211,577.90 × 275,840.20
  4. Step 4: Simplify right side
    807,718.60x = 334,201,890,251.58
  5. Step 5: Solve for x
    x = 334,201,890,251.58/807,718.60
  6. Step 6: Final answer
    x = 413,760.30

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Similar ratio
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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.