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Finding the Fourth Proportional to 389,116.53, 583,692.68 and 119,225.34

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Solution

The fourth proportional to 389,116.53, 583,692.68 and 119,225.34 is: 178,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,116.53 : 583,692.68 = 119,225.34 : x
  2. Step 2: Convert to fraction form
    389,116.53/583,692.68 = 119,225.34/x
  3. Step 3: Cross multiply
    389,116.53x = 583,692.68 × 119,225.34
  4. Step 4: Simplify right side
    389,116.53x = 69,590,957,632.38
  5. Step 5: Solve for x
    x = 69,590,957,632.38/389,116.53
  6. Step 6: Final answer
    x = 178,843.49

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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.