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Finding the Fourth Proportional to 86,525.68, 129,732.72 and 33,940.48

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Solution

The fourth proportional to 86,525.68, 129,732.72 and 33,940.48 is: 50,888.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,525.68 : 129,732.72 = 33,940.48 : x
  2. Step 2: Convert to fraction form
    86,525.68/129,732.72 = 33,940.48/x
  3. Step 3: Cross multiply
    86,525.68x = 129,732.72 × 33,940.48
  4. Step 4: Simplify right side
    86,525.68x = 4,403,190,788.51
  5. Step 5: Solve for x
    x = 4,403,190,788.51/86,525.68
  6. Step 6: Final answer
    x = 50,888.83

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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.