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Finding the Fourth Proportional to 351,431.40, 527,068.05 and 161,709.78

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Solution

The fourth proportional to 351,431.40, 527,068.05 and 161,709.78 is: 242,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,431.40 : 527,068.05 = 161,709.78 : x
  2. Step 2: Convert to fraction form
    351,431.40/527,068.05 = 161,709.78/x
  3. Step 3: Cross multiply
    351,431.40x = 527,068.05 × 161,709.78
  4. Step 4: Simplify right side
    351,431.40x = 85,232,058,410.53
  5. Step 5: Solve for x
    x = 85,232,058,410.53/351,431.40
  6. Step 6: Final answer
    x = 242,528.30

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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.