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Finding the Fourth Proportional to 133,162.80, 183,766.16 and 72,735.24

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Solution

The fourth proportional to 133,162.80, 183,766.16 and 72,735.24 is: 100,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,162.80 : 183,766.16 = 72,735.24 : x
  2. Step 2: Convert to fraction form
    133,162.80/183,766.16 = 72,735.24/x
  3. Step 3: Cross multiply
    133,162.80x = 183,766.16 × 72,735.24
  4. Step 4: Simplify right side
    133,162.80x = 13,366,275,751.48
  5. Step 5: Solve for x
    x = 13,366,275,751.48/133,162.80
  6. Step 6: Final answer
    x = 100,375.45

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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.