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Finding the Fourth Proportional to 436,339.82, 654,517.83 and 136,813.70

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Solution

The fourth proportional to 436,339.82, 654,517.83 and 136,813.70 is: 205,223.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,339.82 : 654,517.83 = 136,813.70 : x
  2. Step 2: Convert to fraction form
    436,339.82/654,517.83 = 136,813.70/x
  3. Step 3: Cross multiply
    436,339.82x = 654,517.83 × 136,813.70
  4. Step 4: Simplify right side
    436,339.82x = 89,547,006,038.27
  5. Step 5: Solve for x
    x = 89,547,006,038.27/436,339.82
  6. Step 6: Final answer
    x = 205,223.09

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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.