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Finding the Fourth Proportional to 98,632.33, 147,949.58 and 28,512.25

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Solution

The fourth proportional to 98,632.33, 147,949.58 and 28,512.25 is: 42,768.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,632.33 : 147,949.58 = 28,512.25 : x
  2. Step 2: Convert to fraction form
    98,632.33/147,949.58 = 28,512.25/x
  3. Step 3: Cross multiply
    98,632.33x = 147,949.58 × 28,512.25
  4. Step 4: Simplify right side
    98,632.33x = 4,218,375,412.36
  5. Step 5: Solve for x
    x = 4,218,375,412.36/98,632.33
  6. Step 6: Final answer
    x = 42,768.69

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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.