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Finding the Fourth Proportional to 173,920.60, 260,819.40 and 82,725.28

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Solution

The fourth proportional to 173,920.60, 260,819.40 and 82,725.28 is: 124,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,920.60 : 260,819.40 = 82,725.28 : x
  2. Step 2: Convert to fraction form
    173,920.60/260,819.40 = 82,725.28/x
  3. Step 3: Cross multiply
    173,920.60x = 260,819.40 × 82,725.28
  4. Step 4: Simplify right side
    173,920.60x = 21,576,357,894.43
  5. Step 5: Solve for x
    x = 21,576,357,894.43/173,920.60
  6. Step 6: Final answer
    x = 124,058.67

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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.