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Finding the Fourth Proportional to 133,390.54, 200,085.80 and 54,504.70

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Solution

The fourth proportional to 133,390.54, 200,085.80 and 54,504.70 is: 81,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,390.54 : 200,085.80 = 54,504.70 : x
  2. Step 2: Convert to fraction form
    133,390.54/200,085.80 = 54,504.70/x
  3. Step 3: Cross multiply
    133,390.54x = 200,085.80 × 54,504.70
  4. Step 4: Simplify right side
    133,390.54x = 10,905,616,503.26
  5. Step 5: Solve for x
    x = 10,905,616,503.26/133,390.54
  6. Step 6: Final answer
    x = 81,757.05

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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.