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Finding the Fourth Proportional to 140,359.01, 193,640.50 and 86,550.60

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Solution

The fourth proportional to 140,359.01, 193,640.50 and 86,550.60 is: 119,405.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,359.01 : 193,640.50 = 86,550.60 : x
  2. Step 2: Convert to fraction form
    140,359.01/193,640.50 = 86,550.60/x
  3. Step 3: Cross multiply
    140,359.01x = 193,640.50 × 86,550.60
  4. Step 4: Simplify right side
    140,359.01x = 16,759,701,242.92
  5. Step 5: Solve for x
    x = 16,759,701,242.92/140,359.01
  6. Step 6: Final answer
    x = 119,405.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.