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Finding the Fourth Proportional to 260,745.60, 391,043.06 and 118,511.64

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Solution

The fourth proportional to 260,745.60, 391,043.06 and 118,511.64 is: 177,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,745.60 : 391,043.06 = 118,511.64 : x
  2. Step 2: Convert to fraction form
    260,745.60/391,043.06 = 118,511.64/x
  3. Step 3: Cross multiply
    260,745.60x = 391,043.06 × 118,511.64
  4. Step 4: Simplify right side
    260,745.60x = 46,343,154,351.22
  5. Step 5: Solve for x
    x = 46,343,154,351.22/260,745.60
  6. Step 6: Final answer
    x = 177,733.22

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1.5x scale

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.