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Finding the Fourth Proportional to 156,919.45, 235,379.18 and 156,919.45

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Solution

The fourth proportional to 156,919.45, 235,379.18 and 156,919.45 is: 235,379.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,919.45 : 235,379.18 = 156,919.45 : x
  2. Step 2: Convert to fraction form
    156,919.45/235,379.18 = 156,919.45/x
  3. Step 3: Cross multiply
    156,919.45x = 235,379.18 × 156,919.45
  4. Step 4: Simplify right side
    156,919.45x = 36,935,571,467.05
  5. Step 5: Solve for x
    x = 36,935,571,467.05/156,919.45
  6. Step 6: Final answer
    x = 235,379.18

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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.