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Finding the Fourth Proportional to 353,441.20, 529,980.20 and 104,090.80

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Solution

The fourth proportional to 353,441.20, 529,980.20 and 104,090.80 is: 156,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,441.20 : 529,980.20 = 104,090.80 : x
  2. Step 2: Convert to fraction form
    353,441.20/529,980.20 = 104,090.80/x
  3. Step 3: Cross multiply
    353,441.20x = 529,980.20 × 104,090.80
  4. Step 4: Simplify right side
    353,441.20x = 55,166,063,002.16
  5. Step 5: Solve for x
    x = 55,166,063,002.16/353,441.20
  6. Step 6: Final answer
    x = 156,082.72

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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.