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Finding the Fourth Proportional to 115,915.60, 173,776.20 and 60,511.60

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Solution

The fourth proportional to 115,915.60, 173,776.20 and 60,511.60 is: 90,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,915.60 : 173,776.20 = 60,511.60 : x
  2. Step 2: Convert to fraction form
    115,915.60/173,776.20 = 60,511.60/x
  3. Step 3: Cross multiply
    115,915.60x = 173,776.20 × 60,511.60
  4. Step 4: Simplify right side
    115,915.60x = 10,515,475,903.92
  5. Step 5: Solve for x
    x = 10,515,475,903.92/115,915.60
  6. Step 6: Final answer
    x = 90,716.66

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1.5x scale

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.