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Finding the Fourth Proportional to 136,903.44, 188,927.04 and 77,287.44

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Solution

The fourth proportional to 136,903.44, 188,927.04 and 77,287.44 is: 106,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,903.44 : 188,927.04 = 77,287.44 : x
  2. Step 2: Convert to fraction form
    136,903.44/188,927.04 = 77,287.44/x
  3. Step 3: Cross multiply
    136,903.44x = 188,927.04 × 77,287.44
  4. Step 4: Simplify right side
    136,903.44x = 14,601,687,268.38
  5. Step 5: Solve for x
    x = 14,601,687,268.38/136,903.44
  6. Step 6: Final answer
    x = 106,656.83

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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.