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Finding the Fourth Proportional to 422,656.05, 583,325.16 and 261,562.98

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Solution

The fourth proportional to 422,656.05, 583,325.16 and 261,562.98 is: 360,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,656.05 : 583,325.16 = 261,562.98 : x
  2. Step 2: Convert to fraction form
    422,656.05/583,325.16 = 261,562.98/x
  3. Step 3: Cross multiply
    422,656.05x = 583,325.16 × 261,562.98
  4. Step 4: Simplify right side
    422,656.05x = 152,576,267,158.58
  5. Step 5: Solve for x
    x = 152,576,267,158.58/422,656.05
  6. Step 6: Final answer
    x = 360,993.93

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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.