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Finding the Fourth Proportional to 174,138.51, 261,207.81 and 139,299.60

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Solution

The fourth proportional to 174,138.51, 261,207.81 and 139,299.60 is: 208,949.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,138.51 : 261,207.81 = 139,299.60 : x
  2. Step 2: Convert to fraction form
    174,138.51/261,207.81 = 139,299.60/x
  3. Step 3: Cross multiply
    174,138.51x = 261,207.81 × 139,299.60
  4. Step 4: Simplify right side
    174,138.51x = 36,386,143,449.88
  5. Step 5: Solve for x
    x = 36,386,143,449.88/174,138.51
  6. Step 6: Final answer
    x = 208,949.44

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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.