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Finding the Fourth Proportional to 100,736.16, 151,137.12 and 48,149.76

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Solution

The fourth proportional to 100,736.16, 151,137.12 and 48,149.76 is: 72,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,736.16 : 151,137.12 = 48,149.76 : x
  2. Step 2: Convert to fraction form
    100,736.16/151,137.12 = 48,149.76/x
  3. Step 3: Cross multiply
    100,736.16x = 151,137.12 × 48,149.76
  4. Step 4: Simplify right side
    100,736.16x = 7,277,216,055.09
  5. Step 5: Solve for x
    x = 7,277,216,055.09/100,736.16
  6. Step 6: Final answer
    x = 72,240.36

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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.