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Finding the Fourth Proportional to 260,747.60, 391,046.06 and 118,513.64

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Solution

The fourth proportional to 260,747.60, 391,046.06 and 118,513.64 is: 177,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,747.60 : 391,046.06 = 118,513.64 : x
  2. Step 2: Convert to fraction form
    260,747.60/391,046.06 = 118,513.64/x
  3. Step 3: Cross multiply
    260,747.60x = 391,046.06 × 118,513.64
  4. Step 4: Simplify right side
    260,747.60x = 46,344,291,978.26
  5. Step 5: Solve for x
    x = 46,344,291,978.26/260,747.60
  6. Step 6: Final answer
    x = 177,736.22

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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.