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Finding the Fourth Proportional to 316,598.40, 436,905.60 and 189,273.60

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Solution

The fourth proportional to 316,598.40, 436,905.60 and 189,273.60 is: 261,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,598.40 : 436,905.60 = 189,273.60 : x
  2. Step 2: Convert to fraction form
    316,598.40/436,905.60 = 189,273.60/x
  3. Step 3: Cross multiply
    316,598.40x = 436,905.60 × 189,273.60
  4. Step 4: Simplify right side
    316,598.40x = 82,694,695,772.16
  5. Step 5: Solve for x
    x = 82,694,695,772.16/316,598.40
  6. Step 6: Final answer
    x = 261,197.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.