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Finding the Fourth Proportional to 530,344.89, 731,861.93 and 288,622.31

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Solution

The fourth proportional to 530,344.89, 731,861.93 and 288,622.31 is: 398,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,344.89 : 731,861.93 = 288,622.31 : x
  2. Step 2: Convert to fraction form
    530,344.89/731,861.93 = 288,622.31/x
  3. Step 3: Cross multiply
    530,344.89x = 731,861.93 × 288,622.31
  4. Step 4: Simplify right side
    530,344.89x = 211,231,677,899.90
  5. Step 5: Solve for x
    x = 211,231,677,899.90/530,344.89
  6. Step 6: Final answer
    x = 398,291.15

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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.