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Finding the Fourth Proportional to 511,809.73, 706,272.78 and 279,222.82

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Solution

The fourth proportional to 511,809.73, 706,272.78 and 279,222.82 is: 385,314.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,809.73 : 706,272.78 = 279,222.82 : x
  2. Step 2: Convert to fraction form
    511,809.73/706,272.78 = 279,222.82/x
  3. Step 3: Cross multiply
    511,809.73x = 706,272.78 × 279,222.82
  4. Step 4: Simplify right side
    511,809.73x = 197,207,475,924.73
  5. Step 5: Solve for x
    x = 197,207,475,924.73/511,809.73
  6. Step 6: Final answer
    x = 385,314.04

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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.