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Finding the Fourth Proportional to 619,706.55, 929,260.63 and 259,780.73

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Solution

The fourth proportional to 619,706.55, 929,260.63 and 259,780.73 is: 389,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,706.55 : 929,260.63 = 259,780.73 : x
  2. Step 2: Convert to fraction form
    619,706.55/929,260.63 = 259,780.73/x
  3. Step 3: Cross multiply
    619,706.55x = 929,260.63 × 259,780.73
  4. Step 4: Simplify right side
    619,706.55x = 241,404,000,175.36
  5. Step 5: Solve for x
    x = 241,404,000,175.36/619,706.55
  6. Step 6: Final answer
    x = 389,545.67

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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.