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Finding the Fourth Proportional to 158,229.99, 218,357.71 and 86,614.58

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Solution

The fourth proportional to 158,229.99, 218,357.71 and 86,614.58 is: 119,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,229.99 : 218,357.71 = 86,614.58 : x
  2. Step 2: Convert to fraction form
    158,229.99/218,357.71 = 86,614.58/x
  3. Step 3: Cross multiply
    158,229.99x = 218,357.71 × 86,614.58
  4. Step 4: Simplify right side
    158,229.99x = 18,912,961,670.77
  5. Step 5: Solve for x
    x = 18,912,961,670.77/158,229.99
  6. Step 6: Final answer
    x = 119,528.30

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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.