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Finding the Fourth Proportional to 115,431.20, 173,152.20 and 36,551.60

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Solution

The fourth proportional to 115,431.20, 173,152.20 and 36,551.60 is: 54,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,431.20 : 173,152.20 = 36,551.60 : x
  2. Step 2: Convert to fraction form
    115,431.20/173,152.20 = 36,551.60/x
  3. Step 3: Cross multiply
    115,431.20x = 173,152.20 × 36,551.60
  4. Step 4: Simplify right side
    115,431.20x = 6,328,989,953.52
  5. Step 5: Solve for x
    x = 6,328,989,953.52/115,431.20
  6. Step 6: Final answer
    x = 54,829.11

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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.