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Finding the Fourth Proportional to 422,756.22, 583,385.22 and 253,083.90

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Solution

The fourth proportional to 422,756.22, 583,385.22 and 253,083.90 is: 349,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,756.22 : 583,385.22 = 253,083.90 : x
  2. Step 2: Convert to fraction form
    422,756.22/583,385.22 = 253,083.90/x
  3. Step 3: Cross multiply
    422,756.22x = 583,385.22 × 253,083.90
  4. Step 4: Simplify right side
    422,756.22x = 147,645,406,679.96
  5. Step 5: Solve for x
    x = 147,645,406,679.96/422,756.22
  6. Step 6: Final answer
    x = 349,244.79

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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.