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Finding the Fourth Proportional to 260,858.67, 391,421.45 and 124,236.45

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Solution

The fourth proportional to 260,858.67, 391,421.45 and 124,236.45 is: 186,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,858.67 : 391,421.45 = 124,236.45 : x
  2. Step 2: Convert to fraction form
    260,858.67/391,421.45 = 124,236.45/x
  3. Step 3: Cross multiply
    260,858.67x = 391,421.45 × 124,236.45
  4. Step 4: Simplify right side
    260,858.67x = 48,628,811,401.85
  5. Step 5: Solve for x
    x = 48,628,811,401.85/260,858.67
  6. Step 6: Final answer
    x = 186,418.23

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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.