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Finding the Fourth Proportional to 74,918, 112,393.12 and 22,331.68

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Solution

The fourth proportional to 74,918, 112,393.12 and 22,331.68 is: 33,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,918 : 112,393.12 = 22,331.68 : x
  2. Step 2: Convert to fraction form
    74,918/112,393.12 = 22,331.68/x
  3. Step 3: Cross multiply
    74,918x = 112,393.12 × 22,331.68
  4. Step 4: Simplify right side
    74,918x = 2,509,927,190.04
  5. Step 5: Solve for x
    x = 2,509,927,190.04/74,918
  6. Step 6: Final answer
    x = 33,502.33

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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.