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Finding the Fourth Proportional to 115,489.40, 173,258.40 and 36,611.60

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Solution

The fourth proportional to 115,489.40, 173,258.40 and 36,611.60 is: 54,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,489.40 : 173,258.40 = 36,611.60 : x
  2. Step 2: Convert to fraction form
    115,489.40/173,258.40 = 36,611.60/x
  3. Step 3: Cross multiply
    115,489.40x = 173,258.40 × 36,611.60
  4. Step 4: Simplify right side
    115,489.40x = 6,343,267,237.44
  5. Step 5: Solve for x
    x = 6,343,267,237.44/115,489.40
  6. Step 6: Final answer
    x = 54,925.10

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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.