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Finding the Fourth Proportional to 328,190.58, 493,313.46 and 216,587.98

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Solution

The fourth proportional to 328,190.58, 493,313.46 and 216,587.98 is: 325,560.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,190.58 : 493,313.46 = 216,587.98 : x
  2. Step 2: Convert to fraction form
    328,190.58/493,313.46 = 216,587.98/x
  3. Step 3: Cross multiply
    328,190.58x = 493,313.46 × 216,587.98
  4. Step 4: Simplify right side
    328,190.58x = 106,845,765,808.21
  5. Step 5: Solve for x
    x = 106,845,765,808.21/328,190.58
  6. Step 6: Final answer
    x = 325,560.12

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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.