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Finding the Fourth Proportional to 131,718.60, 197,351.10 and 61,453.80

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Solution

The fourth proportional to 131,718.60, 197,351.10 and 61,453.80 is: 92,074.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,718.60 : 197,351.10 = 61,453.80 : x
  2. Step 2: Convert to fraction form
    131,718.60/197,351.10 = 61,453.80/x
  3. Step 3: Cross multiply
    131,718.60x = 197,351.10 × 61,453.80
  4. Step 4: Simplify right side
    131,718.60x = 12,127,975,029.18
  5. Step 5: Solve for x
    x = 12,127,975,029.18/131,718.60
  6. Step 6: Final answer
    x = 92,074.89

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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.