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Finding the Fourth Proportional to 386,348.28, 579,402.42 and 186,544.44

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Solution

The fourth proportional to 386,348.28, 579,402.42 and 186,544.44 is: 279,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,348.28 : 579,402.42 = 186,544.44 : x
  2. Step 2: Convert to fraction form
    386,348.28/579,402.42 = 186,544.44/x
  3. Step 3: Cross multiply
    386,348.28x = 579,402.42 × 186,544.44
  4. Step 4: Simplify right side
    386,348.28x = 108,084,299,973.55
  5. Step 5: Solve for x
    x = 108,084,299,973.55/386,348.28
  6. Step 6: Final answer
    x = 279,758.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.