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Finding the Fourth Proportional to 125,153.70, 187,488.63 and 69,581.22

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Solution

The fourth proportional to 125,153.70, 187,488.63 and 69,581.22 is: 104,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,153.70 : 187,488.63 = 69,581.22 : x
  2. Step 2: Convert to fraction form
    125,153.70/187,488.63 = 69,581.22/x
  3. Step 3: Cross multiply
    125,153.70x = 187,488.63 × 69,581.22
  4. Step 4: Simplify right side
    125,153.70x = 13,045,687,611.53
  5. Step 5: Solve for x
    x = 13,045,687,611.53/125,153.70
  6. Step 6: Final answer
    x = 104,237.33

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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.