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Finding the Fourth Proportional to 260,859.67, 391,422.95 and 124,237.45

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Solution

The fourth proportional to 260,859.67, 391,422.95 and 124,237.45 is: 186,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,859.67 : 391,422.95 = 124,237.45 : x
  2. Step 2: Convert to fraction form
    260,859.67/391,422.95 = 124,237.45/x
  3. Step 3: Cross multiply
    260,859.67x = 391,422.95 × 124,237.45
  4. Step 4: Simplify right side
    260,859.67x = 48,629,389,179.48
  5. Step 5: Solve for x
    x = 48,629,389,179.48/260,859.67
  6. Step 6: Final answer
    x = 186,419.73

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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.