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Finding the Fourth Proportional to 125,395.76, 187,772.49 and 69,173.37

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Solution

The fourth proportional to 125,395.76, 187,772.49 and 69,173.37 is: 103,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,395.76 : 187,772.49 = 69,173.37 : x
  2. Step 2: Convert to fraction form
    125,395.76/187,772.49 = 69,173.37/x
  3. Step 3: Cross multiply
    125,395.76x = 187,772.49 × 69,173.37
  4. Step 4: Simplify right side
    125,395.76x = 12,988,855,926.59
  5. Step 5: Solve for x
    x = 12,988,855,926.59/125,395.76
  6. Step 6: Final answer
    x = 103,582.90

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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.