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Finding the Fourth Proportional to 156,956.40, 235,175.40 and 133,628.40

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Solution

The fourth proportional to 156,956.40, 235,175.40 and 133,628.40 is: 200,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,956.40 : 235,175.40 = 133,628.40 : x
  2. Step 2: Convert to fraction form
    156,956.40/235,175.40 = 133,628.40/x
  3. Step 3: Cross multiply
    156,956.40x = 235,175.40 × 133,628.40
  4. Step 4: Simplify right side
    156,956.40x = 31,426,112,421.36
  5. Step 5: Solve for x
    x = 31,426,112,421.36/156,956.40
  6. Step 6: Final answer
    x = 200,221.92

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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.