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Finding the Fourth Proportional to 328,588.92, 492,859.08 and 91,926.36

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Solution

The fourth proportional to 328,588.92, 492,859.08 and 91,926.36 is: 137,882.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,588.92 : 492,859.08 = 91,926.36 : x
  2. Step 2: Convert to fraction form
    328,588.92/492,859.08 = 91,926.36/x
  3. Step 3: Cross multiply
    328,588.92x = 492,859.08 × 91,926.36
  4. Step 4: Simplify right side
    328,588.92x = 45,306,741,217.35
  5. Step 5: Solve for x
    x = 45,306,741,217.35/328,588.92
  6. Step 6: Final answer
    x = 137,882.74

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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.