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Finding the Fourth Proportional to 230,738.60, 346,107.90 and 213,023.90

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Solution

The fourth proportional to 230,738.60, 346,107.90 and 213,023.90 is: 319,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,738.60 : 346,107.90 = 213,023.90 : x
  2. Step 2: Convert to fraction form
    230,738.60/346,107.90 = 213,023.90/x
  3. Step 3: Cross multiply
    230,738.60x = 346,107.90 × 213,023.90
  4. Step 4: Simplify right side
    230,738.60x = 73,729,254,678.81
  5. Step 5: Solve for x
    x = 73,729,254,678.81/230,738.60
  6. Step 6: Final answer
    x = 319,535.85

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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.