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Finding the Fourth Proportional to 260,765.67, 391,148.52 and 167,861.91

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Solution

The fourth proportional to 260,765.67, 391,148.52 and 167,861.91 is: 251,792.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,765.67 : 391,148.52 = 167,861.91 : x
  2. Step 2: Convert to fraction form
    260,765.67/391,148.52 = 167,861.91/x
  3. Step 3: Cross multiply
    260,765.67x = 391,148.52 × 167,861.91
  4. Step 4: Simplify right side
    260,765.67x = 65,658,937,660.87
  5. Step 5: Solve for x
    x = 65,658,937,660.87/260,765.67
  6. Step 6: Final answer
    x = 251,792.87

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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.