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Finding the Fourth Proportional to 129,708.60, 194,562.90 and 103,464.60

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Solution

The fourth proportional to 129,708.60, 194,562.90 and 103,464.60 is: 155,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,708.60 : 194,562.90 = 103,464.60 : x
  2. Step 2: Convert to fraction form
    129,708.60/194,562.90 = 103,464.60/x
  3. Step 3: Cross multiply
    129,708.60x = 194,562.90 × 103,464.60
  4. Step 4: Simplify right side
    129,708.60x = 20,130,372,623.34
  5. Step 5: Solve for x
    x = 20,130,372,623.34/129,708.60
  6. Step 6: Final answer
    x = 155,196.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.