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Finding the Fourth Proportional to 511,199.30, 705,445.61 and 278,628.26

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Solution

The fourth proportional to 511,199.30, 705,445.61 and 278,628.26 is: 384,501.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,199.30 : 705,445.61 = 278,628.26 : x
  2. Step 2: Convert to fraction form
    511,199.30/705,445.61 = 278,628.26/x
  3. Step 3: Cross multiply
    511,199.30x = 705,445.61 × 278,628.26
  4. Step 4: Simplify right side
    511,199.30x = 196,557,077,918.57
  5. Step 5: Solve for x
    x = 196,557,077,918.57/511,199.30
  6. Step 6: Final answer
    x = 384,501.85

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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.