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Finding the Fourth Proportional to 235,993.49, 353,777.67 and 86,128.62

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Solution

The fourth proportional to 235,993.49, 353,777.67 and 86,128.62 is: 129,115.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,993.49 : 353,777.67 = 86,128.62 : x
  2. Step 2: Convert to fraction form
    235,993.49/353,777.67 = 86,128.62/x
  3. Step 3: Cross multiply
    235,993.49x = 353,777.67 × 86,128.62
  4. Step 4: Simplify right side
    235,993.49x = 30,470,382,503.92
  5. Step 5: Solve for x
    x = 30,470,382,503.92/235,993.49
  6. Step 6: Final answer
    x = 129,115.35

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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.