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Finding the Fourth Proportional to 368,429.80, 552,644.70 and 119,111.80

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Solution

The fourth proportional to 368,429.80, 552,644.70 and 119,111.80 is: 178,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,429.80 : 552,644.70 = 119,111.80 : x
  2. Step 2: Convert to fraction form
    368,429.80/552,644.70 = 119,111.80/x
  3. Step 3: Cross multiply
    368,429.80x = 552,644.70 × 119,111.80
  4. Step 4: Simplify right side
    368,429.80x = 65,826,504,977.46
  5. Step 5: Solve for x
    x = 65,826,504,977.46/368,429.80
  6. Step 6: Final answer
    x = 178,667.70

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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.