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Finding the Fourth Proportional to 316,690.72, 474,692.64 and 158,537.68

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Solution

The fourth proportional to 316,690.72, 474,692.64 and 158,537.68 is: 237,634.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,690.72 : 474,692.64 = 158,537.68 : x
  2. Step 2: Convert to fraction form
    316,690.72/474,692.64 = 158,537.68/x
  3. Step 3: Cross multiply
    316,690.72x = 474,692.64 × 158,537.68
  4. Step 4: Simplify right side
    316,690.72x = 75,256,669,858.68
  5. Step 5: Solve for x
    x = 75,256,669,858.68/316,690.72
  6. Step 6: Final answer
    x = 237,634.59

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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.