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Finding the Fourth Proportional to 300,838.56, 450,783.12 and 111,037.68

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Solution

The fourth proportional to 300,838.56, 450,783.12 and 111,037.68 is: 166,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,838.56 : 450,783.12 = 111,037.68 : x
  2. Step 2: Convert to fraction form
    300,838.56/450,783.12 = 111,037.68/x
  3. Step 3: Cross multiply
    300,838.56x = 450,783.12 × 111,037.68
  4. Step 4: Simplify right side
    300,838.56x = 50,053,911,827.96
  5. Step 5: Solve for x
    x = 50,053,911,827.96/300,838.56
  6. Step 6: Final answer
    x = 166,381.30

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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.