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Finding the Fourth Proportional to 125,625.80, 188,438.70 and 124,313.60

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Solution

The fourth proportional to 125,625.80, 188,438.70 and 124,313.60 is: 186,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,625.80 : 188,438.70 = 124,313.60 : x
  2. Step 2: Convert to fraction form
    125,625.80/188,438.70 = 124,313.60/x
  3. Step 3: Cross multiply
    125,625.80x = 188,438.70 × 124,313.60
  4. Step 4: Simplify right side
    125,625.80x = 23,425,493,176.32
  5. Step 5: Solve for x
    x = 23,425,493,176.32/125,625.80
  6. Step 6: Final answer
    x = 186,470.40

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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.