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Finding the Fourth Proportional to 173,912.70, 261,185.85 and 152,139.90

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Solution

The fourth proportional to 173,912.70, 261,185.85 and 152,139.90 is: 228,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,912.70 : 261,185.85 = 152,139.90 : x
  2. Step 2: Convert to fraction form
    173,912.70/261,185.85 = 152,139.90/x
  3. Step 3: Cross multiply
    173,912.70x = 261,185.85 × 152,139.90
  4. Step 4: Simplify right side
    173,912.70x = 39,736,789,100.42
  5. Step 5: Solve for x
    x = 39,736,789,100.42/173,912.70
  6. Step 6: Final answer
    x = 228,486.99

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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.