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Finding the Fourth Proportional to 470,216.52, 648,862.82 and 276,631.92

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Solution

The fourth proportional to 470,216.52, 648,862.82 and 276,631.92 is: 381,730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,216.52 : 648,862.82 = 276,631.92 : x
  2. Step 2: Convert to fraction form
    470,216.52/648,862.82 = 276,631.92/x
  3. Step 3: Cross multiply
    470,216.52x = 648,862.82 × 276,631.92
  4. Step 4: Simplify right side
    470,216.52x = 179,496,167,713.21
  5. Step 5: Solve for x
    x = 179,496,167,713.21/470,216.52
  6. Step 6: Final answer
    x = 381,730.88

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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.