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Finding the Fourth Proportional to 107,129.81, 160,671.64 and 43,887.92

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Solution

The fourth proportional to 107,129.81, 160,671.64 and 43,887.92 is: 65,822.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,129.81 : 160,671.64 = 43,887.92 : x
  2. Step 2: Convert to fraction form
    107,129.81/160,671.64 = 43,887.92/x
  3. Step 3: Cross multiply
    107,129.81x = 160,671.64 × 43,887.92
  4. Step 4: Simplify right side
    107,129.81x = 7,051,543,059.79
  5. Step 5: Solve for x
    x = 7,051,543,059.79/107,129.81
  6. Step 6: Final answer
    x = 65,822.42

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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.