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Finding the Fourth Proportional to 86,561.90, 129,764.48 and 33,957.26

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Solution

The fourth proportional to 86,561.90, 129,764.48 and 33,957.26 is: 50,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,561.90 : 129,764.48 = 33,957.26 : x
  2. Step 2: Convert to fraction form
    86,561.90/129,764.48 = 33,957.26/x
  3. Step 3: Cross multiply
    86,561.90x = 129,764.48 × 33,957.26
  4. Step 4: Simplify right side
    86,561.90x = 4,406,446,186.12
  5. Step 5: Solve for x
    x = 4,406,446,186.12/86,561.90
  6. Step 6: Final answer
    x = 50,905.15

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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.