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Finding the Fourth Proportional to 173,861.80, 260,792.70 and 131,871.40

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Solution

The fourth proportional to 173,861.80, 260,792.70 and 131,871.40 is: 197,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,861.80 : 260,792.70 = 131,871.40 : x
  2. Step 2: Convert to fraction form
    173,861.80/260,792.70 = 131,871.40/x
  3. Step 3: Cross multiply
    173,861.80x = 260,792.70 × 131,871.40
  4. Step 4: Simplify right side
    173,861.80x = 34,391,098,458.78
  5. Step 5: Solve for x
    x = 34,391,098,458.78/173,861.80
  6. Step 6: Final answer
    x = 197,807.10

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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.