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Finding the Fourth Proportional to 353,599.20, 529,621.20 and 345,823.20

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Solution

The fourth proportional to 353,599.20, 529,621.20 and 345,823.20 is: 517,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,599.20 : 529,621.20 = 345,823.20 : x
  2. Step 2: Convert to fraction form
    353,599.20/529,621.20 = 345,823.20/x
  3. Step 3: Cross multiply
    353,599.20x = 529,621.20 × 345,823.20
  4. Step 4: Simplify right side
    353,599.20x = 183,155,298,171.84
  5. Step 5: Solve for x
    x = 183,155,298,171.84/353,599.20
  6. Step 6: Final answer
    x = 517,974.30

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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.