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Finding the Fourth Proportional to 118,897.16, 164,079.41 and 67,916.62

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Solution

The fourth proportional to 118,897.16, 164,079.41 and 67,916.62 is: 93,725.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,897.16 : 164,079.41 = 67,916.62 : x
  2. Step 2: Convert to fraction form
    118,897.16/164,079.41 = 67,916.62/x
  3. Step 3: Cross multiply
    118,897.16x = 164,079.41 × 67,916.62
  4. Step 4: Simplify right side
    118,897.16x = 11,143,718,938.79
  5. Step 5: Solve for x
    x = 11,143,718,938.79/118,897.16
  6. Step 6: Final answer
    x = 93,725.69

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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.