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Finding the Fourth Proportional to 133,063.40, 199,623.90 and 39,578.60

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Solution

The fourth proportional to 133,063.40, 199,623.90 and 39,578.60 is: 59,376.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,063.40 : 199,623.90 = 39,578.60 : x
  2. Step 2: Convert to fraction form
    133,063.40/199,623.90 = 39,578.60/x
  3. Step 3: Cross multiply
    133,063.40x = 199,623.90 × 39,578.60
  4. Step 4: Simplify right side
    133,063.40x = 7,900,834,488.54
  5. Step 5: Solve for x
    x = 7,900,834,488.54/133,063.40
  6. Step 6: Final answer
    x = 59,376.47

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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.