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Finding the Fourth Proportional to 492,052.40, 738,251.40 and 211,655.60

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Solution

The fourth proportional to 492,052.40, 738,251.40 and 211,655.60 is: 317,557.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,052.40 : 738,251.40 = 211,655.60 : x
  2. Step 2: Convert to fraction form
    492,052.40/738,251.40 = 211,655.60/x
  3. Step 3: Cross multiply
    492,052.40x = 738,251.40 × 211,655.60
  4. Step 4: Simplify right side
    492,052.40x = 156,255,043,017.84
  5. Step 5: Solve for x
    x = 156,255,043,017.84/492,052.40
  6. Step 6: Final answer
    x = 317,557.73

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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.