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Finding the Fourth Proportional to 65,998.59, 91,054.17 and 43,349.85

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Solution

The fourth proportional to 65,998.59, 91,054.17 and 43,349.85 is: 59,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,998.59 : 91,054.17 = 43,349.85 : x
  2. Step 2: Convert to fraction form
    65,998.59/91,054.17 = 43,349.85/x
  3. Step 3: Cross multiply
    65,998.59x = 91,054.17 × 43,349.85
  4. Step 4: Simplify right side
    65,998.59x = 3,947,184,611.37
  5. Step 5: Solve for x
    x = 3,947,184,611.37/65,998.59
  6. Step 6: Final answer
    x = 59,807.11

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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.