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Finding the Fourth Proportional to 453,679.30, 680,486.14 and 216,958.42

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Solution

The fourth proportional to 453,679.30, 680,486.14 and 216,958.42 is: 325,421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,679.30 : 680,486.14 = 216,958.42 : x
  2. Step 2: Convert to fraction form
    453,679.30/680,486.14 = 216,958.42/x
  3. Step 3: Cross multiply
    453,679.30x = 680,486.14 × 216,958.42
  4. Step 4: Simplify right side
    453,679.30x = 147,637,197,766.30
  5. Step 5: Solve for x
    x = 147,637,197,766.30/453,679.30
  6. Step 6: Final answer
    x = 325,421.94

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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.