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Finding the Fourth Proportional to 266,638.72, 400,068.48 and 116,801.60

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Solution

The fourth proportional to 266,638.72, 400,068.48 and 116,801.60 is: 175,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,638.72 : 400,068.48 = 116,801.60 : x
  2. Step 2: Convert to fraction form
    266,638.72/400,068.48 = 116,801.60/x
  3. Step 3: Cross multiply
    266,638.72x = 400,068.48 × 116,801.60
  4. Step 4: Simplify right side
    266,638.72x = 46,728,638,573.57
  5. Step 5: Solve for x
    x = 46,728,638,573.57/266,638.72
  6. Step 6: Final answer
    x = 175,250.76

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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.