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Finding the Fourth Proportional to 103,636.40, 155,377.80 and 44,423.60

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Solution

The fourth proportional to 103,636.40, 155,377.80 and 44,423.60 is: 66,602.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.40 : 155,377.80 = 44,423.60 : x
  2. Step 2: Convert to fraction form
    103,636.40/155,377.80 = 44,423.60/x
  3. Step 3: Cross multiply
    103,636.40x = 155,377.80 × 44,423.60
  4. Step 4: Simplify right side
    103,636.40x = 6,902,441,236.08
  5. Step 5: Solve for x
    x = 6,902,441,236.08/103,636.40
  6. Step 6: Final answer
    x = 66,602.48

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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.