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Finding the Fourth Proportional to 483,426.40, 724,448.40 and 356,072.80

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Solution

The fourth proportional to 483,426.40, 724,448.40 and 356,072.80 is: 533,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,426.40 : 724,448.40 = 356,072.80 : x
  2. Step 2: Convert to fraction form
    483,426.40/724,448.40 = 356,072.80/x
  3. Step 3: Cross multiply
    483,426.40x = 724,448.40 × 356,072.80
  4. Step 4: Simplify right side
    483,426.40x = 257,956,370,243.52
  5. Step 5: Solve for x
    x = 257,956,370,243.52/483,426.40
  6. Step 6: Final answer
    x = 533,600.09

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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.