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Finding the Fourth Proportional to 316,963.53, 475,599.09 and 139,447.50

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Solution

The fourth proportional to 316,963.53, 475,599.09 and 139,447.50 is: 209,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,963.53 : 475,599.09 = 139,447.50 : x
  2. Step 2: Convert to fraction form
    316,963.53/475,599.09 = 139,447.50/x
  3. Step 3: Cross multiply
    316,963.53x = 475,599.09 × 139,447.50
  4. Step 4: Simplify right side
    316,963.53x = 66,321,104,102.78
  5. Step 5: Solve for x
    x = 66,321,104,102.78/316,963.53
  6. Step 6: Final answer
    x = 209,238.91

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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.