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Finding the Fourth Proportional to 118,686.66, 163,829.07 and 73,399.38

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Solution

The fourth proportional to 118,686.66, 163,829.07 and 73,399.38 is: 101,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,686.66 : 163,829.07 = 73,399.38 : x
  2. Step 2: Convert to fraction form
    118,686.66/163,829.07 = 73,399.38/x
  3. Step 3: Cross multiply
    118,686.66x = 163,829.07 × 73,399.38
  4. Step 4: Simplify right side
    118,686.66x = 12,024,952,163.98
  5. Step 5: Solve for x
    x = 12,024,952,163.98/118,686.66
  6. Step 6: Final answer
    x = 101,316.80

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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.