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Finding the Fourth Proportional to 173,857.20, 260,785.80 and 156,361.20

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Solution

The fourth proportional to 173,857.20, 260,785.80 and 156,361.20 is: 234,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,857.20 : 260,785.80 = 156,361.20 : x
  2. Step 2: Convert to fraction form
    173,857.20/260,785.80 = 156,361.20/x
  3. Step 3: Cross multiply
    173,857.20x = 260,785.80 × 156,361.20
  4. Step 4: Simplify right side
    173,857.20x = 40,776,780,630.96
  5. Step 5: Solve for x
    x = 40,776,780,630.96/173,857.20
  6. Step 6: Final answer
    x = 234,541.80

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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.