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Finding the Fourth Proportional to 570,918.53, 856,109.59 and 331,100.58

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Solution

The fourth proportional to 570,918.53, 856,109.59 and 331,100.58 is: 496,495.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,918.53 : 856,109.59 = 331,100.58 : x
  2. Step 2: Convert to fraction form
    570,918.53/856,109.59 = 331,100.58/x
  3. Step 3: Cross multiply
    570,918.53x = 856,109.59 × 331,100.58
  4. Step 4: Simplify right side
    570,918.53x = 283,458,385,416.85
  5. Step 5: Solve for x
    x = 283,458,385,416.85/570,918.53
  6. Step 6: Final answer
    x = 496,495.33

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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.