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Finding the Fourth Proportional to 383,881.72, 529,755.29 and 211,810.40

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Solution

The fourth proportional to 383,881.72, 529,755.29 and 211,810.40 is: 292,297.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,881.72 : 529,755.29 = 211,810.40 : x
  2. Step 2: Convert to fraction form
    383,881.72/529,755.29 = 211,810.40/x
  3. Step 3: Cross multiply
    383,881.72x = 529,755.29 × 211,810.40
  4. Step 4: Simplify right side
    383,881.72x = 112,207,676,169.19
  5. Step 5: Solve for x
    x = 112,207,676,169.19/383,881.72
  6. Step 6: Final answer
    x = 292,297.52

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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.