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Finding the Fourth Proportional to 353,257.80, 529,886.70 and 274,428.60

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Solution

The fourth proportional to 353,257.80, 529,886.70 and 274,428.60 is: 411,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,257.80 : 529,886.70 = 274,428.60 : x
  2. Step 2: Convert to fraction form
    353,257.80/529,886.70 = 274,428.60/x
  3. Step 3: Cross multiply
    353,257.80x = 529,886.70 × 274,428.60
  4. Step 4: Simplify right side
    353,257.80x = 145,416,065,239.62
  5. Step 5: Solve for x
    x = 145,416,065,239.62/353,257.80
  6. Step 6: Final answer
    x = 411,642.90

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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.