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Finding the Fourth Proportional to 103,615.70, 155,308.35 and 44,441.30

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Solution

The fourth proportional to 103,615.70, 155,308.35 and 44,441.30 is: 66,612.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.70 : 155,308.35 = 44,441.30 : x
  2. Step 2: Convert to fraction form
    103,615.70/155,308.35 = 44,441.30/x
  3. Step 3: Cross multiply
    103,615.70x = 155,308.35 × 44,441.30
  4. Step 4: Simplify right side
    103,615.70x = 6,902,104,974.86
  5. Step 5: Solve for x
    x = 6,902,104,974.86/103,615.70
  6. Step 6: Final answer
    x = 66,612.54

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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.