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Finding the Fourth Proportional to 174,987.80, 262,481.70 and 86,414.30

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Solution

The fourth proportional to 174,987.80, 262,481.70 and 86,414.30 is: 129,621.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,987.80 : 262,481.70 = 86,414.30 : x
  2. Step 2: Convert to fraction form
    174,987.80/262,481.70 = 86,414.30/x
  3. Step 3: Cross multiply
    174,987.80x = 262,481.70 × 86,414.30
  4. Step 4: Simplify right side
    174,987.80x = 22,682,172,368.31
  5. Step 5: Solve for x
    x = 22,682,172,368.31/174,987.80
  6. Step 6: Final answer
    x = 129,621.45

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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.