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Finding the Fourth Proportional to 74,918.40, 112,231.80 and 41,578.80

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Solution

The fourth proportional to 74,918.40, 112,231.80 and 41,578.80 is: 62,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,918.40 : 112,231.80 = 41,578.80 : x
  2. Step 2: Convert to fraction form
    74,918.40/112,231.80 = 41,578.80/x
  3. Step 3: Cross multiply
    74,918.40x = 112,231.80 × 41,578.80
  4. Step 4: Simplify right side
    74,918.40x = 4,666,463,565.84
  5. Step 5: Solve for x
    x = 4,666,463,565.84/74,918.40
  6. Step 6: Final answer
    x = 62,287.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.