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Finding the Fourth Proportional to 355,297.80, 532,071.90 and 168,090.60

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Solution

The fourth proportional to 355,297.80, 532,071.90 and 168,090.60 is: 251,722.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,297.80 : 532,071.90 = 168,090.60 : x
  2. Step 2: Convert to fraction form
    355,297.80/532,071.90 = 168,090.60/x
  3. Step 3: Cross multiply
    355,297.80x = 532,071.90 × 168,090.60
  4. Step 4: Simplify right side
    355,297.80x = 89,436,284,914.14
  5. Step 5: Solve for x
    x = 89,436,284,914.14/355,297.80
  6. Step 6: Final answer
    x = 251,722.03

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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.