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Finding the Fourth Proportional to 156,396.14, 234,406.14 and 72,040.30

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Solution

The fourth proportional to 156,396.14, 234,406.14 and 72,040.30 is: 107,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,396.14 : 234,406.14 = 72,040.30 : x
  2. Step 2: Convert to fraction form
    156,396.14/234,406.14 = 72,040.30/x
  3. Step 3: Cross multiply
    156,396.14x = 234,406.14 × 72,040.30
  4. Step 4: Simplify right side
    156,396.14x = 16,886,688,647.44
  5. Step 5: Solve for x
    x = 16,886,688,647.44/156,396.14
  6. Step 6: Final answer
    x = 107,973.82

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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.