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Finding the Fourth Proportional to 331,322.43, 457,212.95 and 202,476.47

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Solution

The fourth proportional to 331,322.43, 457,212.95 and 202,476.47 is: 279,410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,322.43 : 457,212.95 = 202,476.47 : x
  2. Step 2: Convert to fraction form
    331,322.43/457,212.95 = 202,476.47/x
  3. Step 3: Cross multiply
    331,322.43x = 457,212.95 × 202,476.47
  4. Step 4: Simplify right side
    331,322.43x = 92,574,862,374.41
  5. Step 5: Solve for x
    x = 92,574,862,374.41/331,322.43
  6. Step 6: Final answer
    x = 279,410.19

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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.