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Finding the Fourth Proportional to 103,690.22, 155,722.69 and 95,354.86

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Solution

The fourth proportional to 103,690.22, 155,722.69 and 95,354.86 is: 143,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.22 : 155,722.69 = 95,354.86 : x
  2. Step 2: Convert to fraction form
    103,690.22/155,722.69 = 95,354.86/x
  3. Step 3: Cross multiply
    103,690.22x = 155,722.69 × 95,354.86
  4. Step 4: Simplify right side
    103,690.22x = 14,848,915,303.77
  5. Step 5: Solve for x
    x = 14,848,915,303.77/103,690.22
  6. Step 6: Final answer
    x = 143,204.59

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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.