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Finding the Fourth Proportional to 205,890.60, 308,690.10 and 93,624.60

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Solution

The fourth proportional to 205,890.60, 308,690.10 and 93,624.60 is: 140,370.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,890.60 : 308,690.10 = 93,624.60 : x
  2. Step 2: Convert to fraction form
    205,890.60/308,690.10 = 93,624.60/x
  3. Step 3: Cross multiply
    205,890.60x = 308,690.10 × 93,624.60
  4. Step 4: Simplify right side
    205,890.60x = 28,900,987,136.46
  5. Step 5: Solve for x
    x = 28,900,987,136.46/205,890.60
  6. Step 6: Final answer
    x = 140,370.60

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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.