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Finding the Fourth Proportional to 211,525.20, 317,287.80 and 177,310.80

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Solution

The fourth proportional to 211,525.20, 317,287.80 and 177,310.80 is: 265,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,525.20 : 317,287.80 = 177,310.80 : x
  2. Step 2: Convert to fraction form
    211,525.20/317,287.80 = 177,310.80/x
  3. Step 3: Cross multiply
    211,525.20x = 317,287.80 × 177,310.80
  4. Step 4: Simplify right side
    211,525.20x = 56,258,553,648.24
  5. Step 5: Solve for x
    x = 56,258,553,648.24/211,525.20
  6. Step 6: Final answer
    x = 265,966.20

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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.