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Finding the Fourth Proportional to 156,692.40, 235,038.60 and 133,072.80

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Solution

The fourth proportional to 156,692.40, 235,038.60 and 133,072.80 is: 199,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,692.40 : 235,038.60 = 133,072.80 : x
  2. Step 2: Convert to fraction form
    156,692.40/235,038.60 = 133,072.80/x
  3. Step 3: Cross multiply
    156,692.40x = 235,038.60 × 133,072.80
  4. Step 4: Simplify right side
    156,692.40x = 31,277,244,610.08
  5. Step 5: Solve for x
    x = 31,277,244,610.08/156,692.40
  6. Step 6: Final answer
    x = 199,609.20

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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.