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Finding the Fourth Proportional to 531,709.67, 797,560.41 and 132,347.78

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Solution

The fourth proportional to 531,709.67, 797,560.41 and 132,347.78 is: 198,520.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,709.67 : 797,560.41 = 132,347.78 : x
  2. Step 2: Convert to fraction form
    531,709.67/797,560.41 = 132,347.78/x
  3. Step 3: Cross multiply
    531,709.67x = 797,560.41 × 132,347.78
  4. Step 4: Simplify right side
    531,709.67x = 105,555,349,679.39
  5. Step 5: Solve for x
    x = 105,555,349,679.39/531,709.67
  6. Step 6: Final answer
    x = 198,520.65

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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.