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Finding the Fourth Proportional to 512,705.04, 769,059.45 and 157,716.60

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Solution

The fourth proportional to 512,705.04, 769,059.45 and 157,716.60 is: 236,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,705.04 : 769,059.45 = 157,716.60 : x
  2. Step 2: Convert to fraction form
    512,705.04/769,059.45 = 157,716.60/x
  3. Step 3: Cross multiply
    512,705.04x = 769,059.45 × 157,716.60
  4. Step 4: Simplify right side
    512,705.04x = 121,293,441,651.87
  5. Step 5: Solve for x
    x = 121,293,441,651.87/512,705.04
  6. Step 6: Final answer
    x = 236,575.48

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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.