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Finding the Fourth Proportional to 139,676.96, 192,620.21 and 93,840.17

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Solution

The fourth proportional to 139,676.96, 192,620.21 and 93,840.17 is: 129,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,676.96 : 192,620.21 = 93,840.17 : x
  2. Step 2: Convert to fraction form
    139,676.96/192,620.21 = 93,840.17/x
  3. Step 3: Cross multiply
    139,676.96x = 192,620.21 × 93,840.17
  4. Step 4: Simplify right side
    139,676.96x = 18,075,511,819.53
  5. Step 5: Solve for x
    x = 18,075,511,819.53/139,676.96
  6. Step 6: Final answer
    x = 129,409.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.