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Finding the Fourth Proportional to 158,253.45, 218,394.90 and 86,633.46

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Solution

The fourth proportional to 158,253.45, 218,394.90 and 86,633.46 is: 119,556.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,253.45 : 218,394.90 = 86,633.46 : x
  2. Step 2: Convert to fraction form
    158,253.45/218,394.90 = 86,633.46/x
  3. Step 3: Cross multiply
    158,253.45x = 218,394.90 × 86,633.46
  4. Step 4: Simplify right side
    158,253.45x = 18,920,305,833.35
  5. Step 5: Solve for x
    x = 18,920,305,833.35/158,253.45
  6. Step 6: Final answer
    x = 119,556.99

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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.