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Finding the Fourth Proportional to 118,886.86, 164,021.84 and 67,862.79

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Solution

The fourth proportional to 118,886.86, 164,021.84 and 67,862.79 is: 93,626.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,886.86 : 164,021.84 = 67,862.79 : x
  2. Step 2: Convert to fraction form
    118,886.86/164,021.84 = 67,862.79/x
  3. Step 3: Cross multiply
    118,886.86x = 164,021.84 × 67,862.79
  4. Step 4: Simplify right side
    118,886.86x = 11,130,979,683.33
  5. Step 5: Solve for x
    x = 11,130,979,683.33/118,886.86
  6. Step 6: Final answer
    x = 93,626.66

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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.