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Finding the Fourth Proportional to 519,692.56, 717,178.14 and 281,228.56

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Solution

The fourth proportional to 519,692.56, 717,178.14 and 281,228.56 is: 388,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,692.56 : 717,178.14 = 281,228.56 : x
  2. Step 2: Convert to fraction form
    519,692.56/717,178.14 = 281,228.56/x
  3. Step 3: Cross multiply
    519,692.56x = 717,178.14 × 281,228.56
  4. Step 4: Simplify right side
    519,692.56x = 201,690,975,575.68
  5. Step 5: Solve for x
    x = 201,690,975,575.68/519,692.56
  6. Step 6: Final answer
    x = 388,096.72

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1.5x scale

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.