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Finding the Fourth Proportional to 353,170.40, 529,731.30 and 113,280.80

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Solution

The fourth proportional to 353,170.40, 529,731.30 and 113,280.80 is: 169,913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,170.40 : 529,731.30 = 113,280.80 : x
  2. Step 2: Convert to fraction form
    353,170.40/529,731.30 = 113,280.80/x
  3. Step 3: Cross multiply
    353,170.40x = 529,731.30 × 113,280.80
  4. Step 4: Simplify right side
    353,170.40x = 60,008,385,449.04
  5. Step 5: Solve for x
    x = 60,008,385,449.04/353,170.40
  6. Step 6: Final answer
    x = 169,913.41

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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.