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Finding the Fourth Proportional to 543,321.90, 762,225.30 and 543,321.90

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Solution

The fourth proportional to 543,321.90, 762,225.30 and 543,321.90 is: 762,225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,321.90 : 762,225.30 = 543,321.90 : x
  2. Step 2: Convert to fraction form
    543,321.90/762,225.30 = 543,321.90/x
  3. Step 3: Cross multiply
    543,321.90x = 762,225.30 × 543,321.90
  4. Step 4: Simplify right side
    543,321.90x = 414,133,698,224.07
  5. Step 5: Solve for x
    x = 414,133,698,224.07/543,321.90
  6. Step 6: Final answer
    x = 762,225.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.