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Finding the Fourth Proportional to 135,398.56, 186,670.80 and 111,110.56

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Solution

The fourth proportional to 135,398.56, 186,670.80 and 111,110.56 is: 153,185.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,398.56 : 186,670.80 = 111,110.56 : x
  2. Step 2: Convert to fraction form
    135,398.56/186,670.80 = 111,110.56/x
  3. Step 3: Cross multiply
    135,398.56x = 186,670.80 × 111,110.56
  4. Step 4: Simplify right side
    135,398.56x = 20,741,097,123.65
  5. Step 5: Solve for x
    x = 20,741,097,123.65/135,398.56
  6. Step 6: Final answer
    x = 153,185.51

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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.