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Finding the Fourth Proportional to 120,694.70, 169,322.50 and 120,694.70

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Solution

The fourth proportional to 120,694.70, 169,322.50 and 120,694.70 is: 169,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,694.70 : 169,322.50 = 120,694.70 : x
  2. Step 2: Convert to fraction form
    120,694.70/169,322.50 = 120,694.70/x
  3. Step 3: Cross multiply
    120,694.70x = 169,322.50 × 120,694.70
  4. Step 4: Simplify right side
    120,694.70x = 20,436,328,340.75
  5. Step 5: Solve for x
    x = 20,436,328,340.75/120,694.70
  6. Step 6: Final answer
    x = 169,322.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.