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Finding the Fourth Proportional to 511,247.99, 705,527.15 and 281,814.12

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Solution

The fourth proportional to 511,247.99, 705,527.15 and 281,814.12 is: 388,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,247.99 : 705,527.15 = 281,814.12 : x
  2. Step 2: Convert to fraction form
    511,247.99/705,527.15 = 281,814.12/x
  3. Step 3: Cross multiply
    511,247.99x = 705,527.15 × 281,814.12
  4. Step 4: Simplify right side
    511,247.99x = 198,827,511,504.29
  5. Step 5: Solve for x
    x = 198,827,511,504.29/511,247.99
  6. Step 6: Final answer
    x = 388,906.20

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Double scale
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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.