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Finding the Fourth Proportional to 386,592.75, 533,731.28 and 252,690.03

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Solution

The fourth proportional to 386,592.75, 533,731.28 and 252,690.03 is: 348,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,592.75 : 533,731.28 = 252,690.03 : x
  2. Step 2: Convert to fraction form
    386,592.75/533,731.28 = 252,690.03/x
  3. Step 3: Cross multiply
    386,592.75x = 533,731.28 × 252,690.03
  4. Step 4: Simplify right side
    386,592.75x = 134,868,571,891.69
  5. Step 5: Solve for x
    x = 134,868,571,891.69/386,592.75
  6. Step 6: Final answer
    x = 348,864.72

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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.