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Finding the Fourth Proportional to 415,834.32, 573,858.84 and 243,876.31

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Solution

The fourth proportional to 415,834.32, 573,858.84 and 243,876.31 is: 336,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,834.32 : 573,858.84 = 243,876.31 : x
  2. Step 2: Convert to fraction form
    415,834.32/573,858.84 = 243,876.31/x
  3. Step 3: Cross multiply
    415,834.32x = 573,858.84 × 243,876.31
  4. Step 4: Simplify right side
    415,834.32x = 139,950,575,140.70
  5. Step 5: Solve for x
    x = 139,950,575,140.70/415,834.32
  6. Step 6: Final answer
    x = 336,553.69

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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.