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Finding the Fourth Proportional to 136,590.64, 188,507.52 and 82,889.32

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Solution

The fourth proportional to 136,590.64, 188,507.52 and 82,889.32 is: 114,394.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,590.64 : 188,507.52 = 82,889.32 : x
  2. Step 2: Convert to fraction form
    136,590.64/188,507.52 = 82,889.32/x
  3. Step 3: Cross multiply
    136,590.64x = 188,507.52 × 82,889.32
  4. Step 4: Simplify right side
    136,590.64x = 15,625,260,147.69
  5. Step 5: Solve for x
    x = 15,625,260,147.69/136,590.64
  6. Step 6: Final answer
    x = 114,394.81

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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.