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Finding the Fourth Proportional to 159,148.35, 219,629.32 and 87,532.97

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Solution

The fourth proportional to 159,148.35, 219,629.32 and 87,532.97 is: 120,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,148.35 : 219,629.32 = 87,532.97 : x
  2. Step 2: Convert to fraction form
    159,148.35/219,629.32 = 87,532.97/x
  3. Step 3: Cross multiply
    159,148.35x = 219,629.32 × 87,532.97
  4. Step 4: Simplify right side
    159,148.35x = 19,224,805,361.70
  5. Step 5: Solve for x
    x = 19,224,805,361.70/159,148.35
  6. Step 6: Final answer
    x = 120,798.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.