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Finding the Fourth Proportional to 554,491.20, 831,729.12 and 133,763.52

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Solution

The fourth proportional to 554,491.20, 831,729.12 and 133,763.52 is: 200,643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,491.20 : 831,729.12 = 133,763.52 : x
  2. Step 2: Convert to fraction form
    554,491.20/831,729.12 = 133,763.52/x
  3. Step 3: Cross multiply
    554,491.20x = 831,729.12 × 133,763.52
  4. Step 4: Simplify right side
    554,491.20x = 111,255,014,777.70
  5. Step 5: Solve for x
    x = 111,255,014,777.70/554,491.20
  6. Step 6: Final answer
    x = 200,643.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.