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Finding the Fourth Proportional to 48,390.50, 72,585.76 and 15,558.50

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Solution

The fourth proportional to 48,390.50, 72,585.76 and 15,558.50 is: 23,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,390.50 : 72,585.76 = 15,558.50 : x
  2. Step 2: Convert to fraction form
    48,390.50/72,585.76 = 15,558.50/x
  3. Step 3: Cross multiply
    48,390.50x = 72,585.76 × 15,558.50
  4. Step 4: Simplify right side
    48,390.50x = 1,129,325,546.96
  5. Step 5: Solve for x
    x = 1,129,325,546.96/48,390.50
  6. Step 6: Final answer
    x = 23,337.75

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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.