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Finding the Fourth Proportional to 382,061.47, 573,059.17 and 129,336.57

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Solution

The fourth proportional to 382,061.47, 573,059.17 and 129,336.57 is: 193,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,061.47 : 573,059.17 = 129,336.57 : x
  2. Step 2: Convert to fraction form
    382,061.47/573,059.17 = 129,336.57/x
  3. Step 3: Cross multiply
    382,061.47x = 573,059.17 × 129,336.57
  4. Step 4: Simplify right side
    382,061.47x = 74,117,507,454.85
  5. Step 5: Solve for x
    x = 74,117,507,454.85/382,061.47
  6. Step 6: Final answer
    x = 193,993.67

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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.