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Finding the Fourth Proportional to 86,706.49, 129,980.91 and 33,364.45

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Solution

The fourth proportional to 86,706.49, 129,980.91 and 33,364.45 is: 50,016.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,706.49 : 129,980.91 = 33,364.45 : x
  2. Step 2: Convert to fraction form
    86,706.49/129,980.91 = 33,364.45/x
  3. Step 3: Cross multiply
    86,706.49x = 129,980.91 × 33,364.45
  4. Step 4: Simplify right side
    86,706.49x = 4,336,741,572.65
  5. Step 5: Solve for x
    x = 4,336,741,572.65/86,706.49
  6. Step 6: Final answer
    x = 50,016.34

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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.