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Finding the Fourth Proportional to 66,398.22, 91,628.71 and 36,184.86

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Solution

The fourth proportional to 66,398.22, 91,628.71 and 36,184.86 is: 49,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,398.22 : 91,628.71 = 36,184.86 : x
  2. Step 2: Convert to fraction form
    66,398.22/91,628.71 = 36,184.86/x
  3. Step 3: Cross multiply
    66,398.22x = 91,628.71 × 36,184.86
  4. Step 4: Simplify right side
    66,398.22x = 3,315,572,043.33
  5. Step 5: Solve for x
    x = 3,315,572,043.33/66,398.22
  6. Step 6: Final answer
    x = 49,934.65

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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.