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Finding the Fourth Proportional to 203,693.40, 305,557.88 and 83,757.65

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Solution

The fourth proportional to 203,693.40, 305,557.88 and 83,757.65 is: 125,643.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,693.40 : 305,557.88 = 83,757.65 : x
  2. Step 2: Convert to fraction form
    203,693.40/305,557.88 = 83,757.65/x
  3. Step 3: Cross multiply
    203,693.40x = 305,557.88 × 83,757.65
  4. Step 4: Simplify right side
    203,693.40x = 25,592,809,967.78
  5. Step 5: Solve for x
    x = 25,592,809,967.78/203,693.40
  6. Step 6: Final answer
    x = 125,643.79

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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.