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Finding the Fourth Proportional to 115,193.86, 158,964.80 and 66,804.43

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Solution

The fourth proportional to 115,193.86, 158,964.80 and 66,804.43 is: 92,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,193.86 : 158,964.80 = 66,804.43 : x
  2. Step 2: Convert to fraction form
    115,193.86/158,964.80 = 66,804.43/x
  3. Step 3: Cross multiply
    115,193.86x = 158,964.80 × 66,804.43
  4. Step 4: Simplify right side
    115,193.86x = 10,619,552,796.46
  5. Step 5: Solve for x
    x = 10,619,552,796.46/115,193.86
  6. Step 6: Final answer
    x = 92,188.53

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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.