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Finding the Fourth Proportional to 211,645.44, 317,469.92 and 53,873.60

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Solution

The fourth proportional to 211,645.44, 317,469.92 and 53,873.60 is: 80,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,645.44 : 317,469.92 = 53,873.60 : x
  2. Step 2: Convert to fraction form
    211,645.44/317,469.92 = 53,873.60/x
  3. Step 3: Cross multiply
    211,645.44x = 317,469.92 × 53,873.60
  4. Step 4: Simplify right side
    211,645.44x = 17,103,247,482.11
  5. Step 5: Solve for x
    x = 17,103,247,482.11/211,645.44
  6. Step 6: Final answer
    x = 80,810.85

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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.