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Finding the Fourth Proportional to 86,561.65, 129,764.11 and 33,957.01

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Solution

The fourth proportional to 86,561.65, 129,764.11 and 33,957.01 is: 50,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,561.65 : 129,764.11 = 33,957.01 : x
  2. Step 2: Convert to fraction form
    86,561.65/129,764.11 = 33,957.01/x
  3. Step 3: Cross multiply
    86,561.65x = 129,764.11 × 33,957.01
  4. Step 4: Simplify right side
    86,561.65x = 4,406,401,011.13
  5. Step 5: Solve for x
    x = 4,406,401,011.13/86,561.65
  6. Step 6: Final answer
    x = 50,904.77

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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.