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Finding the Fourth Proportional to 625,916.44, 863,801.22 and 354,008.44

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Solution

The fourth proportional to 625,916.44, 863,801.22 and 354,008.44 is: 488,552.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,916.44 : 863,801.22 = 354,008.44 : x
  2. Step 2: Convert to fraction form
    625,916.44/863,801.22 = 354,008.44/x
  3. Step 3: Cross multiply
    625,916.44x = 863,801.22 × 354,008.44
  4. Step 4: Simplify right side
    625,916.44x = 305,792,922,362.30
  5. Step 5: Solve for x
    x = 305,792,922,362.30/625,916.44
  6. Step 6: Final answer
    x = 488,552.31

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1.5x scale

Why These Related Problems?

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