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Finding the Fourth Proportional to 423,452.10, 584,375.60 and 239,676.06

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Solution

The fourth proportional to 423,452.10, 584,375.60 and 239,676.06 is: 330,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,452.10 : 584,375.60 = 239,676.06 : x
  2. Step 2: Convert to fraction form
    423,452.10/584,375.60 = 239,676.06/x
  3. Step 3: Cross multiply
    423,452.10x = 584,375.60 × 239,676.06
  4. Step 4: Simplify right side
    423,452.10x = 140,060,840,169.76
  5. Step 5: Solve for x
    x = 140,060,840,169.76/423,452.10
  6. Step 6: Final answer
    x = 330,759.58

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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.