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Finding the Fourth Proportional to 505,764.30, 758,865.15 and 256,446.30

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Solution

The fourth proportional to 505,764.30, 758,865.15 and 256,446.30 is: 384,780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,764.30 : 758,865.15 = 256,446.30 : x
  2. Step 2: Convert to fraction form
    505,764.30/758,865.15 = 256,446.30/x
  3. Step 3: Cross multiply
    505,764.30x = 758,865.15 × 256,446.30
  4. Step 4: Simplify right side
    505,764.30x = 194,608,159,916.45
  5. Step 5: Solve for x
    x = 194,608,159,916.45/505,764.30
  6. Step 6: Final answer
    x = 384,780.34

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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.