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Finding the Fourth Proportional to 125,688.94, 188,493.35 and 41,433.40

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Solution

The fourth proportional to 125,688.94, 188,493.35 and 41,433.40 is: 62,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,688.94 : 188,493.35 = 41,433.40 : x
  2. Step 2: Convert to fraction form
    125,688.94/188,493.35 = 41,433.40/x
  3. Step 3: Cross multiply
    125,688.94x = 188,493.35 × 41,433.40
  4. Step 4: Simplify right side
    125,688.94x = 7,809,920,367.89
  5. Step 5: Solve for x
    x = 7,809,920,367.89/125,688.94
  6. Step 6: Final answer
    x = 62,136.89

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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.