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Finding the Fourth Proportional to 647,616.43, 893,714.58 and 361,154.65

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Solution

The fourth proportional to 647,616.43, 893,714.58 and 361,154.65 is: 498,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,616.43 : 893,714.58 = 361,154.65 : x
  2. Step 2: Convert to fraction form
    647,616.43/893,714.58 = 361,154.65/x
  3. Step 3: Cross multiply
    647,616.43x = 893,714.58 × 361,154.65
  4. Step 4: Simplify right side
    647,616.43x = 322,769,176,339.80
  5. Step 5: Solve for x
    x = 322,769,176,339.80/647,616.43
  6. Step 6: Final answer
    x = 498,395.60

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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.