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Finding the Fourth Proportional to 511,206.17, 705,505.08 and 281,804.28

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Solution

The fourth proportional to 511,206.17, 705,505.08 and 281,804.28 is: 388,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,206.17 : 705,505.08 = 281,804.28 : x
  2. Step 2: Convert to fraction form
    511,206.17/705,505.08 = 281,804.28/x
  3. Step 3: Cross multiply
    511,206.17x = 705,505.08 × 281,804.28
  4. Step 4: Simplify right side
    511,206.17x = 198,814,349,516.86
  5. Step 5: Solve for x
    x = 198,814,349,516.86/511,206.17
  6. Step 6: Final answer
    x = 388,912.27

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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.