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Finding the Fourth Proportional to 280,183.60, 386,683.15 and 171,351.60

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Solution

The fourth proportional to 280,183.60, 386,683.15 and 171,351.60 is: 236,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,183.60 : 386,683.15 = 171,351.60 : x
  2. Step 2: Convert to fraction form
    280,183.60/386,683.15 = 171,351.60/x
  3. Step 3: Cross multiply
    280,183.60x = 386,683.15 × 171,351.60
  4. Step 4: Simplify right side
    280,183.60x = 66,258,776,983.87
  5. Step 5: Solve for x
    x = 66,258,776,983.87/280,183.60
  6. Step 6: Final answer
    x = 236,483.42

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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.