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Finding the Fourth Proportional to 511,045.40, 766,859.70 and 195,728.60

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Solution

The fourth proportional to 511,045.40, 766,859.70 and 195,728.60 is: 293,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,045.40 : 766,859.70 = 195,728.60 : x
  2. Step 2: Convert to fraction form
    511,045.40/766,859.70 = 195,728.60/x
  3. Step 3: Cross multiply
    511,045.40x = 766,859.70 × 195,728.60
  4. Step 4: Simplify right side
    511,045.40x = 150,096,375,477.42
  5. Step 5: Solve for x
    x = 150,096,375,477.42/511,045.40
  6. Step 6: Final answer
    x = 293,704.58

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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.