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Finding the Fourth Proportional to 48,328.40, 72,638.40 and 41,913.20

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Solution

The fourth proportional to 48,328.40, 72,638.40 and 41,913.20 is: 62,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,328.40 : 72,638.40 = 41,913.20 : x
  2. Step 2: Convert to fraction form
    48,328.40/72,638.40 = 41,913.20/x
  3. Step 3: Cross multiply
    48,328.40x = 72,638.40 × 41,913.20
  4. Step 4: Simplify right side
    48,328.40x = 3,044,507,786.88
  5. Step 5: Solve for x
    x = 3,044,507,786.88/48,328.40
  6. Step 6: Final answer
    x = 62,996.25

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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.