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Finding the Fourth Proportional to 48,915.80, 73,373.70 and 48,259.70

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Solution

The fourth proportional to 48,915.80, 73,373.70 and 48,259.70 is: 72,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,915.80 : 73,373.70 = 48,259.70 : x
  2. Step 2: Convert to fraction form
    48,915.80/73,373.70 = 48,259.70/x
  3. Step 3: Cross multiply
    48,915.80x = 73,373.70 × 48,259.70
  4. Step 4: Simplify right side
    48,915.80x = 3,540,992,749.89
  5. Step 5: Solve for x
    x = 3,540,992,749.89/48,915.80
  6. Step 6: Final answer
    x = 72,389.55

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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.