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Finding the Fourth Proportional to 205,125.60, 308,005.20 and 111,813.60

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Solution

The fourth proportional to 205,125.60, 308,005.20 and 111,813.60 is: 167,893.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,125.60 : 308,005.20 = 111,813.60 : x
  2. Step 2: Convert to fraction form
    205,125.60/308,005.20 = 111,813.60/x
  3. Step 3: Cross multiply
    205,125.60x = 308,005.20 × 111,813.60
  4. Step 4: Simplify right side
    205,125.60x = 34,439,170,230.72
  5. Step 5: Solve for x
    x = 34,439,170,230.72/205,125.60
  6. Step 6: Final answer
    x = 167,893.09

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1.5x scale

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.