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Finding the Fourth Proportional to 103,696.60, 155,453.70 and 61,472.60

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Solution

The fourth proportional to 103,696.60, 155,453.70 and 61,472.60 is: 92,154.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.60 : 155,453.70 = 61,472.60 : x
  2. Step 2: Convert to fraction form
    103,696.60/155,453.70 = 61,472.60/x
  3. Step 3: Cross multiply
    103,696.60x = 155,453.70 × 61,472.60
  4. Step 4: Simplify right side
    103,696.60x = 9,556,143,118.62
  5. Step 5: Solve for x
    x = 9,556,143,118.62/103,696.60
  6. Step 6: Final answer
    x = 92,154.84

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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.