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Finding the Fourth Proportional to 115,388.40, 173,131.20 and 62,835.60

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Solution

The fourth proportional to 115,388.40, 173,131.20 and 62,835.60 is: 94,279.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,388.40 : 173,131.20 = 62,835.60 : x
  2. Step 2: Convert to fraction form
    115,388.40/173,131.20 = 62,835.60/x
  3. Step 3: Cross multiply
    115,388.40x = 173,131.20 × 62,835.60
  4. Step 4: Simplify right side
    115,388.40x = 10,878,802,830.72
  5. Step 5: Solve for x
    x = 10,878,802,830.72/115,388.40
  6. Step 6: Final answer
    x = 94,279.87

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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.