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Finding the Fourth Proportional to 511,537.12, 705,911.88 and 282,115.58

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Solution

The fourth proportional to 511,537.12, 705,911.88 and 282,115.58 is: 389,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,537.12 : 705,911.88 = 282,115.58 : x
  2. Step 2: Convert to fraction form
    511,537.12/705,911.88 = 282,115.58/x
  3. Step 3: Cross multiply
    511,537.12x = 705,911.88 × 282,115.58
  4. Step 4: Simplify right side
    511,537.12x = 199,148,741,219.87
  5. Step 5: Solve for x
    x = 199,148,741,219.87/511,537.12
  6. Step 6: Final answer
    x = 389,314.35

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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.