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Finding the Fourth Proportional to 79,690.51, 109,973.72 and 43,883.85

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Solution

The fourth proportional to 79,690.51, 109,973.72 and 43,883.85 is: 60,560.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.51 : 109,973.72 = 43,883.85 : x
  2. Step 2: Convert to fraction form
    79,690.51/109,973.72 = 43,883.85/x
  3. Step 3: Cross multiply
    79,690.51x = 109,973.72 × 43,883.85
  4. Step 4: Simplify right side
    79,690.51x = 4,826,070,232.42
  5. Step 5: Solve for x
    x = 4,826,070,232.42/79,690.51
  6. Step 6: Final answer
    x = 60,560.16

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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.