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Finding the Fourth Proportional to 230,716.40, 346,009.80 and 72,993.20

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Solution

The fourth proportional to 230,716.40, 346,009.80 and 72,993.20 is: 109,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,716.40 : 346,009.80 = 72,993.20 : x
  2. Step 2: Convert to fraction form
    230,716.40/346,009.80 = 72,993.20/x
  3. Step 3: Cross multiply
    230,716.40x = 346,009.80 × 72,993.20
  4. Step 4: Simplify right side
    230,716.40x = 25,256,362,533.36
  5. Step 5: Solve for x
    x = 25,256,362,533.36/230,716.40
  6. Step 6: Final answer
    x = 109,469.30

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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.