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Finding the Fourth Proportional to 56,392.11, 77,923.76 and 53,659.17

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Solution

The fourth proportional to 56,392.11, 77,923.76 and 53,659.17 is: 74,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,392.11 : 77,923.76 = 53,659.17 : x
  2. Step 2: Convert to fraction form
    56,392.11/77,923.76 = 53,659.17/x
  3. Step 3: Cross multiply
    56,392.11x = 77,923.76 × 53,659.17
  4. Step 4: Simplify right side
    56,392.11x = 4,181,324,016.58
  5. Step 5: Solve for x
    x = 4,181,324,016.58/56,392.11
  6. Step 6: Final answer
    x = 74,147.32

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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.