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Finding the Fourth Proportional to 159,246.84, 219,762.21 and 87,628.41

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Solution

The fourth proportional to 159,246.84, 219,762.21 and 87,628.41 is: 120,928.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,246.84 : 219,762.21 = 87,628.41 : x
  2. Step 2: Convert to fraction form
    159,246.84/219,762.21 = 87,628.41/x
  3. Step 3: Cross multiply
    159,246.84x = 219,762.21 × 87,628.41
  4. Step 4: Simplify right side
    159,246.84x = 19,257,412,011.55
  5. Step 5: Solve for x
    x = 19,257,412,011.55/159,246.84
  6. Step 6: Final answer
    x = 120,928.06

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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.