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Finding the Fourth Proportional to 529,771.85, 731,079.60 and 394,411.13

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Solution

The fourth proportional to 529,771.85, 731,079.60 and 394,411.13 is: 544,283.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,771.85 : 731,079.60 = 394,411.13 : x
  2. Step 2: Convert to fraction form
    529,771.85/731,079.60 = 394,411.13/x
  3. Step 3: Cross multiply
    529,771.85x = 731,079.60 × 394,411.13
  4. Step 4: Simplify right side
    529,771.85x = 288,345,931,155.95
  5. Step 5: Solve for x
    x = 288,345,931,155.95/529,771.85
  6. Step 6: Final answer
    x = 544,283.23

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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.