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Finding the Fourth Proportional to 103,610.60, 155,415.90 and 95,661.80

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Solution

The fourth proportional to 103,610.60, 155,415.90 and 95,661.80 is: 143,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,610.60 : 155,415.90 = 95,661.80 : x
  2. Step 2: Convert to fraction form
    103,610.60/155,415.90 = 95,661.80/x
  3. Step 3: Cross multiply
    103,610.60x = 155,415.90 × 95,661.80
  4. Step 4: Simplify right side
    103,610.60x = 14,867,364,742.62
  5. Step 5: Solve for x
    x = 14,867,364,742.62/103,610.60
  6. Step 6: Final answer
    x = 143,492.70

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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.