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Finding the Fourth Proportional to 389,382.48, 537,294.60 and 238,447.44

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Solution

The fourth proportional to 389,382.48, 537,294.60 and 238,447.44 is: 329,024.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,382.48 : 537,294.60 = 238,447.44 : x
  2. Step 2: Convert to fraction form
    389,382.48/537,294.60 = 238,447.44/x
  3. Step 3: Cross multiply
    389,382.48x = 537,294.60 × 238,447.44
  4. Step 4: Simplify right side
    389,382.48x = 128,116,521,895.82
  5. Step 5: Solve for x
    x = 128,116,521,895.82/389,382.48
  6. Step 6: Final answer
    x = 329,024.88

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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.