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Finding the Fourth Proportional to 86,564.60, 129,768.51 and 33,959.96

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Solution

The fourth proportional to 86,564.60, 129,768.51 and 33,959.96 is: 50,909.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,564.60 : 129,768.51 = 33,959.96 : x
  2. Step 2: Convert to fraction form
    86,564.60/129,768.51 = 33,959.96/x
  3. Step 3: Cross multiply
    86,564.60x = 129,768.51 × 33,959.96
  4. Step 4: Simplify right side
    86,564.60x = 4,406,932,760.02
  5. Step 5: Solve for x
    x = 4,406,932,760.02/86,564.60
  6. Step 6: Final answer
    x = 50,909.18

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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.