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Finding the Fourth Proportional to 251,171.87, 346,615.80 and 136,449.60

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Solution

The fourth proportional to 251,171.87, 346,615.80 and 136,449.60 is: 188,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,171.87 : 346,615.80 = 136,449.60 : x
  2. Step 2: Convert to fraction form
    251,171.87/346,615.80 = 136,449.60/x
  3. Step 3: Cross multiply
    251,171.87x = 346,615.80 × 136,449.60
  4. Step 4: Simplify right side
    251,171.87x = 47,295,587,263.68
  5. Step 5: Solve for x
    x = 47,295,587,263.68/251,171.87
  6. Step 6: Final answer
    x = 188,299.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.