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Finding the Fourth Proportional to 159,266.28, 219,788.26 and 87,653.48

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Solution

The fourth proportional to 159,266.28, 219,788.26 and 87,653.48 is: 120,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,266.28 : 219,788.26 = 87,653.48 : x
  2. Step 2: Convert to fraction form
    159,266.28/219,788.26 = 87,653.48/x
  3. Step 3: Cross multiply
    159,266.28x = 219,788.26 × 87,653.48
  4. Step 4: Simplify right side
    159,266.28x = 19,265,205,852.14
  5. Step 5: Solve for x
    x = 19,265,205,852.14/159,266.28
  6. Step 6: Final answer
    x = 120,962.24

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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.