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Finding the Fourth Proportional to 74,360.80, 111,541.20 and 52,199.20

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Solution

The fourth proportional to 74,360.80, 111,541.20 and 52,199.20 is: 78,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,360.80 : 111,541.20 = 52,199.20 : x
  2. Step 2: Convert to fraction form
    74,360.80/111,541.20 = 52,199.20/x
  3. Step 3: Cross multiply
    74,360.80x = 111,541.20 × 52,199.20
  4. Step 4: Simplify right side
    74,360.80x = 5,822,361,407.04
  5. Step 5: Solve for x
    x = 5,822,361,407.04/74,360.80
  6. Step 6: Final answer
    x = 78,298.80

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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.