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Finding the Fourth Proportional to 158,077.12, 218,151.12 and 86,455.84

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Solution

The fourth proportional to 158,077.12, 218,151.12 and 86,455.84 is: 119,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,077.12 : 218,151.12 = 86,455.84 : x
  2. Step 2: Convert to fraction form
    158,077.12/218,151.12 = 86,455.84/x
  3. Step 3: Cross multiply
    158,077.12x = 218,151.12 × 86,455.84
  4. Step 4: Simplify right side
    158,077.12x = 18,860,438,326.54
  5. Step 5: Solve for x
    x = 18,860,438,326.54/158,077.12
  6. Step 6: Final answer
    x = 119,311.63

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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.