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Finding the Fourth Proportional to 74,974.80, 112,474.80 and 22,389.60

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Solution

The fourth proportional to 74,974.80, 112,474.80 and 22,389.60 is: 33,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,974.80 : 112,474.80 = 22,389.60 : x
  2. Step 2: Convert to fraction form
    74,974.80/112,474.80 = 22,389.60/x
  3. Step 3: Cross multiply
    74,974.80x = 112,474.80 × 22,389.60
  4. Step 4: Simplify right side
    74,974.80x = 2,518,265,782.08
  5. Step 5: Solve for x
    x = 2,518,265,782.08/74,974.80
  6. Step 6: Final answer
    x = 33,588.16

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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.