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Finding the Fourth Proportional to 18,178.71, 27,268.41 and 5,698.46

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Solution

The fourth proportional to 18,178.71, 27,268.41 and 5,698.46 is: 8,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.71 : 27,268.41 = 5,698.46 : x
  2. Step 2: Convert to fraction form
    18,178.71/27,268.41 = 5,698.46/x
  3. Step 3: Cross multiply
    18,178.71x = 27,268.41 × 5,698.46
  4. Step 4: Simplify right side
    18,178.71x = 155,387,778.81
  5. Step 5: Solve for x
    x = 155,387,778.81/18,178.71
  6. Step 6: Final answer
    x = 8,547.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.