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Finding the Fourth Proportional to 192,642.28, 288,891.59 and 66,246.74

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Solution

The fourth proportional to 192,642.28, 288,891.59 and 66,246.74 is: 99,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,642.28 : 288,891.59 = 66,246.74 : x
  2. Step 2: Convert to fraction form
    192,642.28/288,891.59 = 66,246.74/x
  3. Step 3: Cross multiply
    192,642.28x = 288,891.59 × 66,246.74
  4. Step 4: Simplify right side
    192,642.28x = 19,138,127,169.90
  5. Step 5: Solve for x
    x = 19,138,127,169.90/192,642.28
  6. Step 6: Final answer
    x = 99,345.41

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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.