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Finding the Fourth Proportional to 315,394.44, 472,916.64 and 104,917.56

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Solution

The fourth proportional to 315,394.44, 472,916.64 and 104,917.56 is: 157,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,394.44 : 472,916.64 = 104,917.56 : x
  2. Step 2: Convert to fraction form
    315,394.44/472,916.64 = 104,917.56/x
  3. Step 3: Cross multiply
    315,394.44x = 472,916.64 × 104,917.56
  4. Step 4: Simplify right side
    315,394.44x = 49,617,259,952.20
  5. Step 5: Solve for x
    x = 49,617,259,952.20/315,394.44
  6. Step 6: Final answer
    x = 157,318.12

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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.