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Finding the Fourth Proportional to 194,459.30, 291,640.35 and 74,490.20

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Solution

The fourth proportional to 194,459.30, 291,640.35 and 74,490.20 is: 111,716.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,459.30 : 291,640.35 = 74,490.20 : x
  2. Step 2: Convert to fraction form
    194,459.30/291,640.35 = 74,490.20/x
  3. Step 3: Cross multiply
    194,459.30x = 291,640.35 × 74,490.20
  4. Step 4: Simplify right side
    194,459.30x = 21,724,347,999.57
  5. Step 5: Solve for x
    x = 21,724,347,999.57/194,459.30
  6. Step 6: Final answer
    x = 111,716.68

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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.