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Finding the Fourth Proportional to 173,415.80, 260,123.70 and 131,425.40

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Solution

The fourth proportional to 173,415.80, 260,123.70 and 131,425.40 is: 197,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,415.80 : 260,123.70 = 131,425.40 : x
  2. Step 2: Convert to fraction form
    173,415.80/260,123.70 = 131,425.40/x
  3. Step 3: Cross multiply
    173,415.80x = 260,123.70 × 131,425.40
  4. Step 4: Simplify right side
    173,415.80x = 34,186,861,321.98
  5. Step 5: Solve for x
    x = 34,186,861,321.98/173,415.80
  6. Step 6: Final answer
    x = 197,138.10

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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.