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Finding the Fourth Proportional to 235,445.10, 353,167.65 and 205,920.60

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Solution

The fourth proportional to 235,445.10, 353,167.65 and 205,920.60 is: 308,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,445.10 : 353,167.65 = 205,920.60 : x
  2. Step 2: Convert to fraction form
    235,445.10/353,167.65 = 205,920.60/x
  3. Step 3: Cross multiply
    235,445.10x = 353,167.65 × 205,920.60
  4. Step 4: Simplify right side
    235,445.10x = 72,724,494,388.59
  5. Step 5: Solve for x
    x = 72,724,494,388.59/235,445.10
  6. Step 6: Final answer
    x = 308,880.90

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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.