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Finding the Fourth Proportional to 110,893.74, 152,874.02 and 79,007.28

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Solution

The fourth proportional to 110,893.74, 152,874.02 and 79,007.28 is: 108,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,893.74 : 152,874.02 = 79,007.28 : x
  2. Step 2: Convert to fraction form
    110,893.74/152,874.02 = 79,007.28/x
  3. Step 3: Cross multiply
    110,893.74x = 152,874.02 × 79,007.28
  4. Step 4: Simplify right side
    110,893.74x = 12,078,160,987.02
  5. Step 5: Solve for x
    x = 12,078,160,987.02/110,893.74
  6. Step 6: Final answer
    x = 108,916.52

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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.