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Finding the Fourth Proportional to 115,916.80, 173,734.80 and 49,216.90

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Solution

The fourth proportional to 115,916.80, 173,734.80 and 49,216.90 is: 73,765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,916.80 : 173,734.80 = 49,216.90 : x
  2. Step 2: Convert to fraction form
    115,916.80/173,734.80 = 49,216.90/x
  3. Step 3: Cross multiply
    115,916.80x = 173,734.80 × 49,216.90
  4. Step 4: Simplify right side
    115,916.80x = 8,550,688,278.12
  5. Step 5: Solve for x
    x = 8,550,688,278.12/115,916.80
  6. Step 6: Final answer
    x = 73,765.74

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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.