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Finding the Fourth Proportional to 328,388.31, 492,587.33 and 216,783.27

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Solution

The fourth proportional to 328,388.31, 492,587.33 and 216,783.27 is: 325,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,388.31 : 492,587.33 = 216,783.27 : x
  2. Step 2: Convert to fraction form
    328,388.31/492,587.33 = 216,783.27/x
  3. Step 3: Cross multiply
    328,388.31x = 492,587.33 × 216,783.27
  4. Step 4: Simplify right side
    328,388.31x = 106,784,691,074.05
  5. Step 5: Solve for x
    x = 106,784,691,074.05/328,388.31
  6. Step 6: Final answer
    x = 325,178.11

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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.