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Finding the Fourth Proportional to 48,862.60, 73,293.90 and 21,214.60

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Solution

The fourth proportional to 48,862.60, 73,293.90 and 21,214.60 is: 31,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,862.60 : 73,293.90 = 21,214.60 : x
  2. Step 2: Convert to fraction form
    48,862.60/73,293.90 = 21,214.60/x
  3. Step 3: Cross multiply
    48,862.60x = 73,293.90 × 21,214.60
  4. Step 4: Simplify right side
    48,862.60x = 1,554,900,770.94
  5. Step 5: Solve for x
    x = 1,554,900,770.94/48,862.60
  6. Step 6: Final answer
    x = 31,821.90

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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.