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Finding the Fourth Proportional to 212,633.10, 318,621.60 and 184,420.80

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Solution

The fourth proportional to 212,633.10, 318,621.60 and 184,420.80 is: 276,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,633.10 : 318,621.60 = 184,420.80 : x
  2. Step 2: Convert to fraction form
    212,633.10/318,621.60 = 184,420.80/x
  3. Step 3: Cross multiply
    212,633.10x = 318,621.60 × 184,420.80
  4. Step 4: Simplify right side
    212,633.10x = 58,760,450,369.28
  5. Step 5: Solve for x
    x = 58,760,450,369.28/212,633.10
  6. Step 6: Final answer
    x = 276,346.68

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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.