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Finding the Fourth Proportional to 386,525.76, 536,976.96 and 383,065.44

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Solution

The fourth proportional to 386,525.76, 536,976.96 and 383,065.44 is: 532,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,525.76 : 536,976.96 = 383,065.44 : x
  2. Step 2: Convert to fraction form
    386,525.76/536,976.96 = 383,065.44/x
  3. Step 3: Cross multiply
    386,525.76x = 536,976.96 × 383,065.44
  4. Step 4: Simplify right side
    386,525.76x = 205,697,315,452.26
  5. Step 5: Solve for x
    x = 205,697,315,452.26/386,525.76
  6. Step 6: Final answer
    x = 532,169.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.