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Finding the Fourth Proportional to 511,429.60, 705,777.60 and 281,995.12

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Solution

The fourth proportional to 511,429.60, 705,777.60 and 281,995.12 is: 389,155.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,429.60 : 705,777.60 = 281,995.12 : x
  2. Step 2: Convert to fraction form
    511,429.60/705,777.60 = 281,995.12/x
  3. Step 3: Cross multiply
    511,429.60x = 705,777.60 × 281,995.12
  4. Step 4: Simplify right side
    511,429.60x = 199,025,839,005.31
  5. Step 5: Solve for x
    x = 199,025,839,005.31/511,429.60
  6. Step 6: Final answer
    x = 389,155.89

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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.