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Finding the Fourth Proportional to 266,181.72, 399,344.40 and 116,435.40

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Solution

The fourth proportional to 266,181.72, 399,344.40 and 116,435.40 is: 174,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,181.72 : 399,344.40 = 116,435.40 : x
  2. Step 2: Convert to fraction form
    266,181.72/399,344.40 = 116,435.40/x
  3. Step 3: Cross multiply
    266,181.72x = 399,344.40 × 116,435.40
  4. Step 4: Simplify right side
    266,181.72x = 46,497,824,951.76
  5. Step 5: Solve for x
    x = 46,497,824,951.76/266,181.72
  6. Step 6: Final answer
    x = 174,684.52

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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.