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Finding the Fourth Proportional to 74,578.30, 102,918.04 and 41,044.30

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Solution

The fourth proportional to 74,578.30, 102,918.04 and 41,044.30 is: 56,641.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,578.30 : 102,918.04 = 41,044.30 : x
  2. Step 2: Convert to fraction form
    74,578.30/102,918.04 = 41,044.30/x
  3. Step 3: Cross multiply
    74,578.30x = 102,918.04 × 41,044.30
  4. Step 4: Simplify right side
    74,578.30x = 4,224,198,909.17
  5. Step 5: Solve for x
    x = 4,224,198,909.17/74,578.30
  6. Step 6: Final answer
    x = 56,641.13

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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.