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Finding the Fourth Proportional to 356,511.28, 491,985.91 and 195,366.69

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Solution

The fourth proportional to 356,511.28, 491,985.91 and 195,366.69 is: 269,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,511.28 : 491,985.91 = 195,366.69 : x
  2. Step 2: Convert to fraction form
    356,511.28/491,985.91 = 195,366.69/x
  3. Step 3: Cross multiply
    356,511.28x = 491,985.91 × 195,366.69
  4. Step 4: Simplify right side
    356,511.28x = 96,117,656,303.41
  5. Step 5: Solve for x
    x = 96,117,656,303.41/356,511.28
  6. Step 6: Final answer
    x = 269,606.21

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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.