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Finding the Fourth Proportional to 115,913.60, 173,481.60 and 101,916.80

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Solution

The fourth proportional to 115,913.60, 173,481.60 and 101,916.80 is: 152,533.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,913.60 : 173,481.60 = 101,916.80 : x
  2. Step 2: Convert to fraction form
    115,913.60/173,481.60 = 101,916.80/x
  3. Step 3: Cross multiply
    115,913.60x = 173,481.60 × 101,916.80
  4. Step 4: Simplify right side
    115,913.60x = 17,680,689,530.88
  5. Step 5: Solve for x
    x = 17,680,689,530.88/115,913.60
  6. Step 6: Final answer
    x = 152,533.35

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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.