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Finding the Fourth Proportional to 189,164.71, 261,049.05 and 104,284.81

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Solution

The fourth proportional to 189,164.71, 261,049.05 and 104,284.81 is: 143,914.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,164.71 : 261,049.05 = 104,284.81 : x
  2. Step 2: Convert to fraction form
    189,164.71/261,049.05 = 104,284.81/x
  3. Step 3: Cross multiply
    189,164.71x = 261,049.05 × 104,284.81
  4. Step 4: Simplify right side
    189,164.71x = 27,223,449,274.69
  5. Step 5: Solve for x
    x = 27,223,449,274.69/189,164.71
  6. Step 6: Final answer
    x = 143,914.00

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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.