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Finding the Fourth Proportional to 384,672.29, 530,921.07 and 253,619.82

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Solution

The fourth proportional to 384,672.29, 530,921.07 and 253,619.82 is: 350,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,672.29 : 530,921.07 = 253,619.82 : x
  2. Step 2: Convert to fraction form
    384,672.29/530,921.07 = 253,619.82/x
  3. Step 3: Cross multiply
    384,672.29x = 530,921.07 × 253,619.82
  4. Step 4: Simplify right side
    384,672.29x = 134,652,106,207.61
  5. Step 5: Solve for x
    x = 134,652,106,207.61/384,672.29
  6. Step 6: Final answer
    x = 350,043.69

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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.