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Finding the Fourth Proportional to 125,643.60, 188,772.60 and 94,539.60

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Solution

The fourth proportional to 125,643.60, 188,772.60 and 94,539.60 is: 142,040.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,643.60 : 188,772.60 = 94,539.60 : x
  2. Step 2: Convert to fraction form
    125,643.60/188,772.60 = 94,539.60/x
  3. Step 3: Cross multiply
    125,643.60x = 188,772.60 × 94,539.60
  4. Step 4: Simplify right side
    125,643.60x = 17,846,486,094.96
  5. Step 5: Solve for x
    x = 17,846,486,094.96/125,643.60
  6. Step 6: Final answer
    x = 142,040.55

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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.