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Finding the Fourth Proportional to 505,796.18, 759,119.92 and 253,000.85

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Solution

The fourth proportional to 505,796.18, 759,119.92 and 253,000.85 is: 379,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,796.18 : 759,119.92 = 253,000.85 : x
  2. Step 2: Convert to fraction form
    505,796.18/759,119.92 = 253,000.85/x
  3. Step 3: Cross multiply
    505,796.18x = 759,119.92 × 253,000.85
  4. Step 4: Simplify right side
    505,796.18x = 192,057,980,583.83
  5. Step 5: Solve for x
    x = 192,057,980,583.83/505,796.18
  6. Step 6: Final answer
    x = 379,714.18

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.