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Finding the Fourth Proportional to 255,801.20, 383,698.20 and 115,559.60

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Solution

The fourth proportional to 255,801.20, 383,698.20 and 115,559.60 is: 173,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,801.20 : 383,698.20 = 115,559.60 : x
  2. Step 2: Convert to fraction form
    255,801.20/383,698.20 = 115,559.60/x
  3. Step 3: Cross multiply
    255,801.20x = 383,698.20 × 115,559.60
  4. Step 4: Simplify right side
    255,801.20x = 44,340,010,512.72
  5. Step 5: Solve for x
    x = 44,340,010,512.72/255,801.20
  6. Step 6: Final answer
    x = 173,337.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.