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Finding the Fourth Proportional to 48,648.40, 72,915.90 and 22,355.80

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Solution

The fourth proportional to 48,648.40, 72,915.90 and 22,355.80 is: 33,507.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,648.40 : 72,915.90 = 22,355.80 : x
  2. Step 2: Convert to fraction form
    48,648.40/72,915.90 = 22,355.80/x
  3. Step 3: Cross multiply
    48,648.40x = 72,915.90 × 22,355.80
  4. Step 4: Simplify right side
    48,648.40x = 1,630,093,277.22
  5. Step 5: Solve for x
    x = 1,630,093,277.22/48,648.40
  6. Step 6: Final answer
    x = 33,507.64

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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.