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Finding the Fourth Proportional to 72,708.45, 108,951.27 and 48,928.01

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Solution

The fourth proportional to 72,708.45, 108,951.27 and 48,928.01 is: 73,317.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,708.45 : 108,951.27 = 48,928.01 : x
  2. Step 2: Convert to fraction form
    72,708.45/108,951.27 = 48,928.01/x
  3. Step 3: Cross multiply
    72,708.45x = 108,951.27 × 48,928.01
  4. Step 4: Simplify right side
    72,708.45x = 5,330,768,828.07
  5. Step 5: Solve for x
    x = 5,330,768,828.07/72,708.45
  6. Step 6: Final answer
    x = 73,317.05

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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.