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Finding the Fourth Proportional to 156,912.40, 235,109.40 and 133,584.40

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Solution

The fourth proportional to 156,912.40, 235,109.40 and 133,584.40 is: 200,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,912.40 : 235,109.40 = 133,584.40 : x
  2. Step 2: Convert to fraction form
    156,912.40/235,109.40 = 133,584.40/x
  3. Step 3: Cross multiply
    156,912.40x = 235,109.40 × 133,584.40
  4. Step 4: Simplify right side
    156,912.40x = 31,406,948,133.36
  5. Step 5: Solve for x
    x = 31,406,948,133.36/156,912.40
  6. Step 6: Final answer
    x = 200,155.93

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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.