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Finding the Fourth Proportional to 511,877.42, 768,287.38 and 259,333.58

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Solution

The fourth proportional to 511,877.42, 768,287.38 and 259,333.58 is: 389,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,877.42 : 768,287.38 = 259,333.58 : x
  2. Step 2: Convert to fraction form
    511,877.42/768,287.38 = 259,333.58/x
  3. Step 3: Cross multiply
    511,877.42x = 768,287.38 × 259,333.58
  4. Step 4: Simplify right side
    511,877.42x = 199,242,716,724.22
  5. Step 5: Solve for x
    x = 199,242,716,724.22/511,877.42
  6. Step 6: Final answer
    x = 389,239.12

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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.