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Finding the Fourth Proportional to 74,486.88, 111,695.19 and 27,068.62

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Solution

The fourth proportional to 74,486.88, 111,695.19 and 27,068.62 is: 40,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,486.88 : 111,695.19 = 27,068.62 : x
  2. Step 2: Convert to fraction form
    74,486.88/111,695.19 = 27,068.62/x
  3. Step 3: Cross multiply
    74,486.88x = 111,695.19 × 27,068.62
  4. Step 4: Simplify right side
    74,486.88x = 3,023,434,653.94
  5. Step 5: Solve for x
    x = 3,023,434,653.94/74,486.88
  6. Step 6: Final answer
    x = 40,590.16

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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.