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Finding the Fourth Proportional to 316,057.77, 474,087.15 and 129,069.27

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Solution

The fourth proportional to 316,057.77, 474,087.15 and 129,069.27 is: 193,604.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,057.77 : 474,087.15 = 129,069.27 : x
  2. Step 2: Convert to fraction form
    316,057.77/474,087.15 = 129,069.27/x
  3. Step 3: Cross multiply
    316,057.77x = 474,087.15 × 129,069.27
  4. Step 4: Simplify right side
    316,057.77x = 61,190,082,366.88
  5. Step 5: Solve for x
    x = 61,190,082,366.88/316,057.77
  6. Step 6: Final answer
    x = 193,604.11

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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.