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Finding the Fourth Proportional to 125,358.76, 187,990.80 and 50,453.38

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Solution

The fourth proportional to 125,358.76, 187,990.80 and 50,453.38 is: 75,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,358.76 : 187,990.80 = 50,453.38 : x
  2. Step 2: Convert to fraction form
    125,358.76/187,990.80 = 50,453.38/x
  3. Step 3: Cross multiply
    125,358.76x = 187,990.80 × 50,453.38
  4. Step 4: Simplify right side
    125,358.76x = 9,484,771,268.90
  5. Step 5: Solve for x
    x = 9,484,771,268.90/125,358.76
  6. Step 6: Final answer
    x = 75,661.02

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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.