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Finding the Fourth Proportional to 483,224.88, 724,780.98 and 128,266.47

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Solution

The fourth proportional to 483,224.88, 724,780.98 and 128,266.47 is: 192,384.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,224.88 : 724,780.98 = 128,266.47 : x
  2. Step 2: Convert to fraction form
    483,224.88/724,780.98 = 128,266.47/x
  3. Step 3: Cross multiply
    483,224.88x = 724,780.98 × 128,266.47
  4. Step 4: Simplify right side
    483,224.88x = 92,965,097,827.74
  5. Step 5: Solve for x
    x = 92,965,097,827.74/483,224.88
  6. Step 6: Final answer
    x = 192,384.75

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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.