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Finding the Fourth Proportional to 617,998.60, 926,123.10 and 542,765.80

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Solution

The fourth proportional to 617,998.60, 926,123.10 and 542,765.80 is: 813,380.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,998.60 : 926,123.10 = 542,765.80 : x
  2. Step 2: Convert to fraction form
    617,998.60/926,123.10 = 542,765.80/x
  3. Step 3: Cross multiply
    617,998.60x = 926,123.10 × 542,765.80
  4. Step 4: Simplify right side
    617,998.60x = 502,667,945,269.98
  5. Step 5: Solve for x
    x = 502,667,945,269.98/617,998.60
  6. Step 6: Final answer
    x = 813,380.39

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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.