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Finding the Fourth Proportional to 331,402.56, 457,355.09 and 249,586.48

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Solution

The fourth proportional to 331,402.56, 457,355.09 and 249,586.48 is: 344,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,402.56 : 457,355.09 = 249,586.48 : x
  2. Step 2: Convert to fraction form
    331,402.56/457,355.09 = 249,586.48/x
  3. Step 3: Cross multiply
    331,402.56x = 457,355.09 × 249,586.48
  4. Step 4: Simplify right side
    331,402.56x = 114,149,648,218.84
  5. Step 5: Solve for x
    x = 114,149,648,218.84/331,402.56
  6. Step 6: Final answer
    x = 344,444.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.