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Finding the Fourth Proportional to 347,221.70, 520,880.96 and 107,355.18

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Solution

The fourth proportional to 347,221.70, 520,880.96 and 107,355.18 is: 161,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,221.70 : 520,880.96 = 107,355.18 : x
  2. Step 2: Convert to fraction form
    347,221.70/520,880.96 = 107,355.18/x
  3. Step 3: Cross multiply
    347,221.70x = 520,880.96 × 107,355.18
  4. Step 4: Simplify right side
    347,221.70x = 55,919,268,682.60
  5. Step 5: Solve for x
    x = 55,919,268,682.60/347,221.70
  6. Step 6: Final answer
    x = 161,047.74

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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.