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Finding the Fourth Proportional to 351,426.80, 527,140.20 and 174,279.80

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Solution

The fourth proportional to 351,426.80, 527,140.20 and 174,279.80 is: 261,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,426.80 : 527,140.20 = 174,279.80 : x
  2. Step 2: Convert to fraction form
    351,426.80/527,140.20 = 174,279.80/x
  3. Step 3: Cross multiply
    351,426.80x = 527,140.20 × 174,279.80
  4. Step 4: Simplify right side
    351,426.80x = 91,869,888,627.96
  5. Step 5: Solve for x
    x = 91,869,888,627.96/351,426.80
  6. Step 6: Final answer
    x = 261,419.70

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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.