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Finding the Fourth Proportional to 125,772.75, 188,603.78 and 66,594.60

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Solution

The fourth proportional to 125,772.75, 188,603.78 and 66,594.60 is: 99,862.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,772.75 : 188,603.78 = 66,594.60 : x
  2. Step 2: Convert to fraction form
    125,772.75/188,603.78 = 66,594.60/x
  3. Step 3: Cross multiply
    125,772.75x = 188,603.78 × 66,594.60
  4. Step 4: Simplify right side
    125,772.75x = 12,559,992,954.62
  5. Step 5: Solve for x
    x = 12,559,992,954.62/125,772.75
  6. Step 6: Final answer
    x = 99,862.59

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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.