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Finding the Fourth Proportional to 647,919.78, 894,153.66 and 361,495.23

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Solution

The fourth proportional to 647,919.78, 894,153.66 and 361,495.23 is: 498,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,919.78 : 894,153.66 = 361,495.23 : x
  2. Step 2: Convert to fraction form
    647,919.78/894,153.66 = 361,495.23/x
  3. Step 3: Cross multiply
    647,919.78x = 894,153.66 × 361,495.23
  4. Step 4: Simplify right side
    647,919.78x = 323,232,282,977.04
  5. Step 5: Solve for x
    x = 323,232,282,977.04/647,919.78
  6. Step 6: Final answer
    x = 498,877.01

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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.