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Finding the Fourth Proportional to 186,755.93, 280,079.22 and 74,398.80

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Solution

The fourth proportional to 186,755.93, 280,079.22 and 74,398.80 is: 111,576.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,755.93 : 280,079.22 = 74,398.80 : x
  2. Step 2: Convert to fraction form
    186,755.93/280,079.22 = 74,398.80/x
  3. Step 3: Cross multiply
    186,755.93x = 280,079.22 × 74,398.80
  4. Step 4: Simplify right side
    186,755.93x = 20,837,558,783.74
  5. Step 5: Solve for x
    x = 20,837,558,783.74/186,755.93
  6. Step 6: Final answer
    x = 111,576.42

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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.