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Finding the Fourth Proportional to 323,692.32, 485,537.76 and 113,390.40

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Solution

The fourth proportional to 323,692.32, 485,537.76 and 113,390.40 is: 170,085.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,692.32 : 485,537.76 = 113,390.40 : x
  2. Step 2: Convert to fraction form
    323,692.32/485,537.76 = 113,390.40/x
  3. Step 3: Cross multiply
    323,692.32x = 485,537.76 × 113,390.40
  4. Step 4: Simplify right side
    323,692.32x = 55,055,320,821.50
  5. Step 5: Solve for x
    x = 55,055,320,821.50/323,692.32
  6. Step 6: Final answer
    x = 170,085.35

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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.