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Finding the Fourth Proportional to 652,393.20, 978,589.80 and 541,801.20

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Solution

The fourth proportional to 652,393.20, 978,589.80 and 541,801.20 is: 812,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,393.20 : 978,589.80 = 541,801.20 : x
  2. Step 2: Convert to fraction form
    652,393.20/978,589.80 = 541,801.20/x
  3. Step 3: Cross multiply
    652,393.20x = 978,589.80 × 541,801.20
  4. Step 4: Simplify right side
    652,393.20x = 530,201,127,947.76
  5. Step 5: Solve for x
    x = 530,201,127,947.76/652,393.20
  6. Step 6: Final answer
    x = 812,701.80

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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.