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Finding the Fourth Proportional to 90,693.20, 125,191.49 and 60,467.49

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Solution

The fourth proportional to 90,693.20, 125,191.49 and 60,467.49 is: 83,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,693.20 : 125,191.49 = 60,467.49 : x
  2. Step 2: Convert to fraction form
    90,693.20/125,191.49 = 60,467.49/x
  3. Step 3: Cross multiply
    90,693.20x = 125,191.49 × 60,467.49
  4. Step 4: Simplify right side
    90,693.20x = 7,570,014,867.32
  5. Step 5: Solve for x
    x = 7,570,014,867.32/90,693.20
  6. Step 6: Final answer
    x = 83,468.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.