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Finding the Fourth Proportional to 260,794.35, 391,191.53 and 142,401.11

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Solution

The fourth proportional to 260,794.35, 391,191.53 and 142,401.11 is: 213,601.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,794.35 : 391,191.53 = 142,401.11 : x
  2. Step 2: Convert to fraction form
    260,794.35/391,191.53 = 142,401.11/x
  3. Step 3: Cross multiply
    260,794.35x = 391,191.53 × 142,401.11
  4. Step 4: Simplify right side
    260,794.35x = 55,706,105,426.64
  5. Step 5: Solve for x
    x = 55,706,105,426.64/260,794.35
  6. Step 6: Final answer
    x = 213,601.66

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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.