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Finding the Fourth Proportional to 543,899.76, 750,372.30 and 400,999.56

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Solution

The fourth proportional to 543,899.76, 750,372.30 and 400,999.56 is: 553,225.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,899.76 : 750,372.30 = 400,999.56 : x
  2. Step 2: Convert to fraction form
    543,899.76/750,372.30 = 400,999.56/x
  3. Step 3: Cross multiply
    543,899.76x = 750,372.30 × 400,999.56
  4. Step 4: Simplify right side
    543,899.76x = 300,898,962,136.19
  5. Step 5: Solve for x
    x = 300,898,962,136.19/543,899.76
  6. Step 6: Final answer
    x = 553,225.03

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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.