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Finding the Fourth Proportional to 77,659.59, 107,169.03 and 43,668.11

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Solution

The fourth proportional to 77,659.59, 107,169.03 and 43,668.11 is: 60,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,659.59 : 107,169.03 = 43,668.11 : x
  2. Step 2: Convert to fraction form
    77,659.59/107,169.03 = 43,668.11/x
  3. Step 3: Cross multiply
    77,659.59x = 107,169.03 × 43,668.11
  4. Step 4: Simplify right side
    77,659.59x = 4,679,868,454.79
  5. Step 5: Solve for x
    x = 4,679,868,454.79/77,659.59
  6. Step 6: Final answer
    x = 60,261.31

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1.5x scale

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.