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Finding the Fourth Proportional to 158,187.87, 237,176.53 and 87,143.92

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Solution

The fourth proportional to 158,187.87, 237,176.53 and 87,143.92 is: 130,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,187.87 : 237,176.53 = 87,143.92 : x
  2. Step 2: Convert to fraction form
    158,187.87/237,176.53 = 87,143.92/x
  3. Step 3: Cross multiply
    158,187.87x = 237,176.53 × 87,143.92
  4. Step 4: Simplify right side
    158,187.87x = 20,668,491,745.40
  5. Step 5: Solve for x
    x = 20,668,491,745.40/158,187.87
  6. Step 6: Final answer
    x = 130,657.88

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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.