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Finding the Fourth Proportional to 479,706.57, 719,494.20 and 142,799.22

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Solution

The fourth proportional to 479,706.57, 719,494.20 and 142,799.22 is: 214,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,706.57 : 719,494.20 = 142,799.22 : x
  2. Step 2: Convert to fraction form
    479,706.57/719,494.20 = 142,799.22/x
  3. Step 3: Cross multiply
    479,706.57x = 719,494.20 × 142,799.22
  4. Step 4: Simplify right side
    479,706.57x = 102,743,210,554.52
  5. Step 5: Solve for x
    x = 102,743,210,554.52/479,706.57
  6. Step 6: Final answer
    x = 214,179.29

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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.