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Finding the Fourth Proportional to 86,448.30, 129,620.61 and 33,795.06

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Solution

The fourth proportional to 86,448.30, 129,620.61 and 33,795.06 is: 50,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,448.30 : 129,620.61 = 33,795.06 : x
  2. Step 2: Convert to fraction form
    86,448.30/129,620.61 = 33,795.06/x
  3. Step 3: Cross multiply
    86,448.30x = 129,620.61 × 33,795.06
  4. Step 4: Simplify right side
    86,448.30x = 4,380,536,292.19
  5. Step 5: Solve for x
    x = 4,380,536,292.19/86,448.30
  6. Step 6: Final answer
    x = 50,672.32

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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.